Advanced Photonics Research最新文献

{"title":"High-Resolution On-Chip Digitally Tunable Spectrometer Based on Double-Cascaded Ring Resonators","authors":"Carla Maria Coppola,&nbsp;Martino De Carlo,&nbsp;Francesco De Leonardis,&nbsp;Vittorio M. N. Passaro","doi":"10.1002/adpr.202500021","DOIUrl":"10.1002/adpr.202500021","url":null,"abstract":"<p>Fast and accurate detection and analysis of light spectrum emerge as an important tool in several scientific fields and applications, hence demanding the design of precise, reliable, and fast instruments. In this article, an integrated spectrometer is presented based on two cascaded ring resonators covered with a phase change material. The Vernier architecture is implemented by these segments of phase change materials, allowing for a digital scan of wavelengths. Resolution smaller than 0.1 nm can be achieved, together with a footprint of ≈0.03 mm² and a bandwidth of the order of tens of nanometers.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resonance Energy Transfer and Purcell Effect in a Cu2O/Au Hybrid Optical Antenna","authors":"Nishan Khatri,&nbsp;Ravi Teja Addanki Tirumala,&nbsp;Susheng Tan,&nbsp;Marimuthu Andiappan,&nbsp;Ali Kaan Kalkan","doi":"10.1002/adpr.202400126","DOIUrl":"https://doi.org/10.1002/adpr.202400126","url":null,"abstract":"<p>Light trapping in subwavelength structures is a fascinating effect inspiring innovative technologies for solar energy harvesting, such as photocatalysis and photovoltaics. In these applications, energy trapped in an excited Mie mode must be efficiently converted to and transported by charge carriers. To this end, resonance energy transfer (RET) is a beneficial mechanism circumventing the challenge of charge transport to electrodes. Here, 48–64 nm diameter Cu₂O nanospheres on Au are investigated by single-particle light scattering and fluorescence spectroscopies. Modeling such a hybrid Cu₂O/Au optical antenna (OA) as an oscillator, where RET from the excited hybrid Mie mode to Au film is described as a damping channel (in addition to scattering and absorption), we measure a RET probability of 70 ± 9% for 532 nm excitation. The OA also mediates RET in the reverse direction, from an excited electron-hole pair in Au to the resonator mode, followed by photon emission (scattering) that enhances fluorescence quantum yield of Au up to 1.3 × 10⁵ times. This giant Purcell enhancement is attributed to strong concentration of the photon states around the Cu₂O/Au interface which spatially overlap with the emitter (coupled Au volume) along with low absorption and scattering damping in Cu₂O particles (i.e., dipole-forbidden gap and smaller particle size).</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 10","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Incoherent Digital Holography Empowered by Wavefront and Information Engineering: A Review","authors":"Teruyoshi Nobukawa","doi":"10.1002/adpr.202500078","DOIUrl":"https://doi.org/10.1002/adpr.202500078","url":null,"abstract":"<p>Incoherent digital holography (IDH) is a technique used to create holograms with a spatially incoherent light source. This technique has unlocked the potential of holography and expanded its applications to 3D fluorescence microscopy and 3D imaging under sunlight. Recent progress in IDH stems from wavefront engineering, in which the phase or polarization of light is tailored using a phase-only spatial light modulator, diffractive optics, metasurfaces, or unique optical configurations with refractive and/or reflective optical devices. Information engineering techniques, such as compressive sensing and deep learning, have also attracted attention in IDH, outperforming conventional optics-physics-based reconstruction. Through wavefront and information engineering, attractive features, such as single-shot recording and enhanced image quality, have been achieved in IDH systems. This paper reviews the basic theory of IDH and compares it to laser-based digital holography. Furthermore, an overview of the remarkable advances in IDH facilitated by wavefront and information engineering is presented. Finally, the outlook of wavefront and information engineering toward practical and diverse IDH applications is discussed, providing valuable insights for future studies.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 10","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent Advances in Laser-Induced Phase Separation of PEDOT:PSS for Bioelectronics","authors":"Bei'er Zhu,&nbsp;Hao Zhou,&nbsp;Yibo Li,&nbsp;Xiaozheng Wang,&nbsp;Kaichen Xu","doi":"10.1002/adpr.202500104","DOIUrl":"https://doi.org/10.1002/adpr.202500104","url":null,"abstract":"<p>Conductive hydrogels are gaining significant attention for their potential in bioelectronic applications. Among these materials, poly(3,4ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) emerges as a promising candidate due to its intrinsic conductivity, flexibility, and biocompatibility. Recently, laser-induced phase separation (LIPS) offers a tunable approach for modifying PEDOT:PSS, significantly enhancing its electrical conductivity, wet stability, and electrochemical stability. This technique also allows for high-spatial-resolution patterning, rendering it suitable for fabricating on-demand bioelectronic interfaces. The excellent biocompatibility of the laser-treated PEDOT:PSS further broadens its potential applications in soft bioelectronic devices. After revealing the LIPS mechanism of PEDOT:PSS and summarizing its key properties, this review offers an overview of its applications in neural signal recording, stimulation, and conduction block. This review establishes a critical connection among the mechanism, properties, and applications of LIPS, thereby paving the way for future research toward advanced bioelectronic applications and beyond.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 10","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500104","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Below 1% Reflectance for Black GaAs Surface Prepared by Facile Two-Step Wet Chemical Treatment: Hydrogen Peroxide and Water","authors":"Zahra Jahanshah Rad,&nbsp;Johanna Laaksonen,&nbsp;Valtteri Alitupa,&nbsp;Mikko Miettinen,&nbsp;Kari Iltanen,&nbsp;Juha-Pekka Lehtiö,&nbsp;Sari Granroth,&nbsp;Ilari Angervo,&nbsp;Marko Punkkinen,&nbsp;Risto Punkkinen,&nbsp;Mikhail Kuzmin,&nbsp;Ermei Mäkilä,&nbsp;Pekka Laukkanen,&nbsp;Petriina Paturi,&nbsp;Kalevi Kokko,&nbsp;Sami Vuori,&nbsp;Mika Lastusaari,&nbsp;Harishchandra Singh,&nbsp;Marko Huttula,&nbsp;Manvedra Narayan Singh,&nbsp;Antti Tukiainen,&nbsp;Heidi Tuorila,&nbsp;Helmer Piirilä,&nbsp;Jukka Viheriälä,&nbsp;Mircea Guina,&nbsp;Jekaterina Kozlova,&nbsp;Mihkel Rähn,&nbsp;Aile Tamm","doi":"10.1002/adpr.202400200","DOIUrl":"10.1002/adpr.202400200","url":null,"abstract":"<p>To increase performance of many photonic devices (e.g., solar cell, light emitting diode (LED), photodetector), it is essential to decrease light reflection at device interfaces. Sustainable and scalable methods have been intensively developed for manufacturing nanostructured antireflection coatings at device surfaces to reduce the reflection-induced losses in them. In this work, a novel wet chemical method is demonstrated to prepare black nanostructured GaAs surfaces in scalable manner. This facile method includes two steps: immersion of GaAs in hot H₂O₂ solution followed by immersion in hot H₂O both at around 80 °C. Microscopy, spectroscopy, and diffraction measurements reveal that the H₂O₂ immersion increases a surface porosity at GaAs while the hot-water treatment causes the formation of GaOOH nanocrystals. Reflectivity at the resulting black GaAs surface is decreased even below 1% in a broadband. Photoluminescence intensity measurements are used to study whether the presented top-to-down method increases harmful non-radiative recombination, as compared to the initial GaAs surface. Integration of the found black-GaAs method with device manufacturing is presented by means of planar metal–GaAs–metal photodetectors, of which external quantum efficiency increases due to the method.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coupling Enhanced Diffractive Deep Neural Network with Structural Nonlinearity","authors":"Ouling Wu,&nbsp;Chao Qian,&nbsp;Guangfeng You,&nbsp;Dashuang Liao,&nbsp;Nanxuan Wu,&nbsp;Hongsheng Chen","doi":"10.1002/adpr.202500038","DOIUrl":"https://doi.org/10.1002/adpr.202500038","url":null,"abstract":"<p>The increasing complexity of deep learning models poses stringent requirements on electronic computers. Diffractive deep neural networks (D²NNs), as one of the most representative optical computing architectures, have emerged as a significant substitute for electronic-based devices due to the advantages of high speed, low power consumption, and high parallelism. However, the absence of optical nonlinearity constrains the potential advancement of D²NNs. Recent progress in structural nonlinearity has offered a promising avenue for addressing this issue, but it necessitates complex digital data pre-encoding. Herein, structural nonlinearity is introduced into D²NNs by incorporating encoding-free data repetition layers, enabling high-order optical nonlinearity while reducing the system complexity. The effectiveness of different data repetition manners demonstrates the robustness of this approach. Additionally, to enhance the design accuracy of D²NNs, a graph neural network framework is developed to characterize the coupling effects in metasurface layers and integrate it into D²NNs. This work provides a novel approach for the design of optical computing devices and holds significant importance for the development of high-performance and highly integrated all-optical devices.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 10","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-Detecting Mid-Infrared Dual-Comb Spectroscopy Based on High-Speed Injection-Locked Quantum Cascade Lasers","authors":"Yu Ma,&nbsp;Dapeng Wu,&nbsp;Ruixin Huang,&nbsp;Shichen Zhang,&nbsp;Binru Zhou,&nbsp;Zejun Ma,&nbsp;Yongqiang Sun,&nbsp;Junqi Liu,&nbsp;Ning Zhuo,&nbsp;Jinchuan Zhang,&nbsp;Shenqiang Zhai,&nbsp;Shuman Liu,&nbsp;Fengqi Liu,&nbsp;Manijeh Razeghi,&nbsp;Quanyong Lu","doi":"10.1002/adpr.70036","DOIUrl":"10.1002/adpr.70036","url":null,"abstract":"<p>\u0000 <b>Dual-Comb Spectroscopy</b>\u0000 </p><p>In article number 2500062, Quanyong Lu and co-workers demonstrate compact self-detecting dual-comb spectroscopy based on dispersion-engineered, high-speed packaged QCLs under coherent injection locking. The high-speed design enables the QCL comb to serve as a high-bandwidth photodetector in the DCS system without the use of external detectors. Broad multiheterodyne signals and narrow dual-comb tooth are recorded from the self-detecting DCS system, which show the unique advantages in intermode coherence, spectral broadening, and system simplification.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 7","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.70036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Hall Effects of Vortex Light in Optical Materials","authors":"Wei-Si Qiu,&nbsp;Li-Li Yang,&nbsp;Dan-Dan Lian,&nbsp;Peng-Ming Zhang","doi":"10.1002/adpr.202500080","DOIUrl":"https://doi.org/10.1002/adpr.202500080","url":null,"abstract":"&lt;p&gt;For light, its spin can be independent of the spatial distribution of its wave function, whereas its intrinsic orbital angular momentum does depend on this distribution. This difference suggests that the spin Hall effect may differ from the orbital Hall effect as light propagates through optical materials. Herein, optical materials are modeled as curved spacetime and light propagation in two specific materials by solving the covariant Maxwell equations is investigated. It is found that the trajectory of light with spin &lt;i&gt;σ&lt;/i&gt; and intrinsic orbital angular momentum &lt;i&gt;ℓ&lt;/i&gt; deviates from that of light without angular momentum (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;σ&lt;/mi&gt;\u0000 &lt;mo&gt;=&lt;/mo&gt;\u0000 &lt;mn&gt;0&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$sigma &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;amp;equals; 0$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; and &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;ℓ&lt;/mi&gt;\u0000 &lt;mo&gt;=&lt;/mo&gt;\u0000 &lt;mn&gt;0&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$&amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;amp;ell; &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;amp;equals; 0$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;) by an angle &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;θ&lt;/mi&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;σ&lt;/mi&gt;\u0000 &lt;mo&gt;,&lt;/mo&gt;\u0000 &lt;mi&gt;ℓ&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;∝&lt;/mo&gt;\u0000 &lt;mn&gt;2&lt;/mn&gt;\u0000 &lt;mi&gt;σ&lt;/mi&gt;\u0000 &lt;mo&gt;+&lt;/mo&gt;\u0000 &lt;mi&gt;ℓ&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$left(thetaright)_{sigma , &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;amp;ell;} propto 2 sigma &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;amp;plus; &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;amp;ell;$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;. In particular, the contribution of spin &lt;i&gt;σ&lt;/i&gt; to angle &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;θ&lt;/mi&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;σ&lt;/mi&gt;\u0000 &lt;mo&gt;,&lt;/mo&gt;\u0000 &lt;mi&gt;ℓ&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$left(thetaright)_{sigma , &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;amp;ell;}$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; is twice that of the intrinsic orbital angular momentum &lt;i&gt;ℓ&lt;/i&gt;, highlighting their differing effects on light propagation in optical materials. Furthermore, angle &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 ","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 10","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in Mode (De)Multiplexing Technologies via Circularly Symmetric Structured Light Beams","authors":"Qingji Zeng,&nbsp;Shu Chen,&nbsp;Zhibin Wu,&nbsp;Junmin Liu,&nbsp;Huapeng Ye,&nbsp;Gaiqing Zhao,&nbsp;Dianyuan Fan,&nbsp;Shuqing Chen","doi":"10.1002/adpr.202500088","DOIUrl":"https://doi.org/10.1002/adpr.202500088","url":null,"abstract":"<p>The exponentially escalating global bandwidth demands have propelled mode-division multiplexing technologies as critical enablers for enlarging optical communication capacity. Leveraging spatially orthogonal photonic eigenmodes of circularly symmetric structured light beams, such as orbital angular momentum (OAM) and cylindrical vector beam (CVB) modes, enables the parallel multiplexing of large-scale digital signals within a single physical channel. This thus significantly expands data transmission density and advances next-generation optical communications and networks forward. This review aims to achieve a comprehensive overview of mode (de)multiplexing technologies using OAM/CVB modes, which are mainly categorized into beam splitter combinations, multiorder diffractive gratings, optical coordinate transformations, angular dispersion lenses, multilayer cascaded modulations, and multidimensional mode hybrid (de)multiplexing. Insights into their current capabilities and limitations are included. We conclude by analyzing the challenges and prospects of this promising field, paving the way for future developments and innovations.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 10","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Realizing Multispectral Fabry–Perot Structural Color Filters Based on Optical Nanostructures on a Complementary Metal Oxide Semiconductor Chip","authors":"Hongwei Gao,&nbsp;Xavier X. Chia,&nbsp;Ruitao Zheng,&nbsp;Sin Heng Lim,&nbsp;Dawn T. H. Tan","doi":"10.1002/adpr.202500057","DOIUrl":"10.1002/adpr.202500057","url":null,"abstract":"<p>A complementary metal oxide semiconductor-compatible transmission filter composed of subwavelength nanostructures is demonstrated through design, numerical modeling, and experimental verification. The tuning of the filters’ peak wavelength via lithographic means in a single dielectric layer, obviating the need for altering the device layer thickness to achieve different filter wavelengths is demonstrated. The Fabry<b>–</b>Perot function is achieved by sandwiching the nanostructures between a bottom distributed Bragg reflector and a top reflector composed of a layer of silver. A spectral resolution of 10 nm–30 nm full width at half maximum and peak transmission efficiency of ≈70% in the multispectral optical filters in both numerical simulations and experimental characterization is experimentally demonstrated. This approach provides a new paradigm in which to achieve color filters, eliminating the need for multiple mask steps for varied device layer thicknesses conventionally used to achieve Fabry<b>–</b>Perot filters, greatly reducing the manufacturing process cost and complexity.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}