SPIE OPTO最新文献

SPIE OPTO Pub Date : 2016-05-25 DOI: 10.1117/12.2212391

I. Azevedo, Elizabeth Sandford-Richardson, M. Richardson, L. Bernardo, Helder Crespo

引用次数: 0

Integrating III-V, Si, and polymer waveguides for optical interconnects: RAPIDO 集成III-V, Si和聚合物波导的光互连:RAPIDO

SPIE OPTO Pub Date : 2016-05-24 DOI: 10.1117/12.2214786

T. Aalto, M. Harjanne, B. Offrein, C. Caër, C. Neumeyr, A. Malacarne, M. Guina, R. Sheehan, F. Peters, P. Melanen

{"title":"Integrating III-V, Si, and polymer waveguides for optical interconnects: RAPIDO","authors":"T. Aalto, M. Harjanne, B. Offrein, C. Caër, C. Neumeyr, A. Malacarne, M. Guina, R. Sheehan, F. Peters, P. Melanen","doi":"10.1117/12.2214786","DOIUrl":"https://doi.org/10.1117/12.2214786","url":null,"abstract":"We present a vision for the hybrid integration of advanced transceivers at 1.3 μm wavelength, and the progress done towards this vision in the EU-funded RAPIDO project. The final goal of the project is to make five demonstrators that show the feasibility of the proposed concepts to make optical interconnects and packet-switched optical networks that are scalable to Pb/s systems in data centers and high performance computing. Simplest transceivers are to be made by combining directly modulated InP VCSELs with 12 μm SOI multiplexers to launch, for example, 200 Gbps data into a single polymer waveguide with 4 channels to connect processors on a single line card. For more advanced transceivers we develop novel dilute nitride amplifiers and modulators that are expected to be more power-efficient and temperatureinsensitive than InP devices. These edge-emitting III-V chips are flip-chip bonded on 3 μm SOI chips that also have polarization and temperature independent multiplexers and low-loss coupling to the 12 μm SOI interposers, enabling to launch up to 640 Gbps data into a standard single mode (SM) fiber. In this paper we present a number of experimental results, including low-loss multiplexers on SOI, zero-birefringence Si waveguides, micron-scale mirrors and bends with 0.1 dB loss, direct modulation of VCSELs up to 40 Gbps, ±0.25μm length control for dilute nitride SOA, strong band edge shifts in dilute nitride EAMs and SM polymer waveguides with 0.4 dB/cm loss.","PeriodicalId":122702,"journal":{"name":"SPIE OPTO","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126421177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Merging photonics with nanoelectronics (Conference Presentation) 光子学与纳米电子学的融合(会议报告)

SPIE OPTO Pub Date : 2016-05-06 DOI: 10.1117/12.2225039

M. Liehr

引用次数: 0

Quantum nonlinear optics: nonlinear optics meets the quantum world (Conference Presentation) 量子非线性光学:非线性光学与量子世界相遇(会议报告)

SPIE OPTO Pub Date : 2016-05-06 DOI: 10.1117/12.2225038

R. Boyd

引用次数: 0

Generic heterogeneously integrated III-V lasers-on-chip with metal-coated etched-mirror 通用异质集成III-V激光片与金属涂层蚀刻镜

SPIE OPTO Pub Date : 2016-05-03 DOI: 10.1117/12.2218395

Chee-Wei Lee, D. Ng, M. Ren, Y. Fu, Anthony Yew Seng Kay, V. Krishnamurthy, Jing Pu, Ai Ling Tan, F. Tjiptoharsono, Soo Bin Choo, Qian Wang

引用次数: 0

RF beam transmission of x-band PAA system utilizing large-area, polymer-based true-time-delay module developed using imprinting and inkjet printing 采用印迹和喷墨打印技术开发的基于聚合物的大面积实时延迟模块的x波段PAA系统的射频波束传输

SPIE OPTO Pub Date : 2016-05-02 DOI: 10.1117/12.2213809

Zeyu Pan, H. Subbaraman, Cheng Zhang, Qiaochu Li, Xiaochuan Xu, Xiangning Chen, Xingyu Zhang, Yi Zou, Ashwin Panday, L. Guo, Ray T. Chen

{"title":"RF beam transmission of x-band PAA system utilizing large-area, polymer-based true-time-delay module developed using imprinting and inkjet printing","authors":"Zeyu Pan, H. Subbaraman, Cheng Zhang, Qiaochu Li, Xiaochuan Xu, Xiangning Chen, Xingyu Zhang, Yi Zou, Ashwin Panday, L. Guo, Ray T. Chen","doi":"10.1117/12.2213809","DOIUrl":"https://doi.org/10.1117/12.2213809","url":null,"abstract":"Phased-array antenna (PAA) technology plays a significant role in modern day radar and communication networks. Truetime- delay (TTD) enabled beam steering networks provide several advantages over their electronic counterparts, including squint-free beam steering, low RF loss, immunity to electromagnetic interference (EMI), and large bandwidth control of PAAs. Chip-scale and integrated TTD modules promise a miniaturized, light-weight system; however, the modules are still rigid and they require complex packaging solutions. Moreover, the total achievable time delay is still restricted by the wafer size. In this work, we propose a light-weight and large-area, true-time-delay beamforming network that can be fabricated on light-weight and flexible/rigid surfaces utilizing low-cost “printing” techniques. In order to prove the feasibility of the approach, a 2-bit thermo-optic polymer TTD network is developed using a combination of imprinting and ink-jet printing. RF beam steering of a 1×4 X-band PAA up to 60° is demonstrated. The development of such active components on large area, light-weight, and low-cost substrates promises significant improvement in size, weight, and power (SWaP) requirements over the state-of-the-art.","PeriodicalId":122702,"journal":{"name":"SPIE OPTO","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130175406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Terahertz generation and detection using femtosecond mode-locked Yb-doped fiber laser 飞秒锁模掺镱光纤激光器的太赫兹产生与探测

SPIE OPTO Pub Date : 2016-05-02 DOI: 10.1117/12.2212114

M. S. Kong, Ji Su Kim, Sang-Pil Han, Namje Kim, K. Moon, K. Park, M. Jeon

{"title":"Terahertz generation and detection using femtosecond mode-locked Yb-doped fiber laser","authors":"M. S. Kong, Ji Su Kim, Sang-Pil Han, Namje Kim, K. Moon, K. Park, M. Jeon","doi":"10.1117/12.2212114","DOIUrl":"https://doi.org/10.1117/12.2212114","url":null,"abstract":"We successfully demonstrate a THz generation using an ytterbium (Yb)-doped mode-locked femtosecond fiber laser and a home-made low-temperature grown (LTG) InGaAs Photoconductive antenna (PCA) module for THz Time-domain spectroscopy (TDS) systems. The Yb-doped fiber ring laser consists of a pump laser diode (PLD), a wavelength division multiplexer (WDM) coupler, a single-mode fiber (SMF), a 25 cm-long highly Yb-doped fiber, two collimators, two quarter wave plates (QWPs), a half-wave plate (HWP), a 10 nm broadband band pass filter, an isolator, and a polarizing beam splitter (PBS). In order to achieve the passively mode-locked optical short pulse, the nonlinear polarization rotation (NPR) effect is used. The achieved center wavelength and the 3 dB bandwidth of the modelocked fiber laser are 1.03 μm and ~ 15.6 nm, respectively. It has 175 fs duration after pulse compression with 66.2 MHz repetition rate. The average output power of mode-locked laser has more than 275 mW. The LTG-InGaAs PCA modules are used as the emitter and receiver in order to achieve the THz radiation. The PCA modules comprise a hyper-hemispherical Si lens and a log-spiral antenna-integrated LTG-InGaAs PCA chip electronically contacted on a printed circuit board (PCB). An excitation optical average pumping and probing power were ~ 6.3 mW and 5 mW, respectively. The free-space distance between the emitter and the receiver in the THz-TDS system was 70 mm. The spectrum of the THz radiation is achieved higher than 1.5 THz.","PeriodicalId":122702,"journal":{"name":"SPIE OPTO","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122239546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Towards a fully packaged high-performance RF sensor featuring slotted photonic crystal waveguides 迈向以开槽光子晶体波导为特征的全封装高性能射频传感器

SPIE OPTO Pub Date : 2016-05-02 DOI: 10.1117/12.2213557

Chi-Jui Chung, H. Subbaraman, Xingyu Zhang, Hai Yan, Jingdong Luo, A. Jen, R. Nelson, C. Lee, Ray T. Chen

{"title":"Towards a fully packaged high-performance RF sensor featuring slotted photonic crystal waveguides","authors":"Chi-Jui Chung, H. Subbaraman, Xingyu Zhang, Hai Yan, Jingdong Luo, A. Jen, R. Nelson, C. Lee, Ray T. Chen","doi":"10.1117/12.2213557","DOIUrl":"https://doi.org/10.1117/12.2213557","url":null,"abstract":"A low loss and high sensitivity X-band RF sensor based on electro-optic (EO) polymer filled silicon slot photonic crystal waveguides (PCW) and bowtie antenna is proposed. By taking advantage of the slow light enhancementt in the PCW(>20X), large EO coefficient of the EO polymer(r33>200pm/V), as well as significant electric field enhancement of bowtie antenna on silicon dioxide substrate(>10000X), we can realize a large in-device EO coefficient over 1000pm/V so as to realize a high performance RF wave sensor. In addition, on-chip Mach-Zender interferometer (MZI) layout working under push-pull configuration is adopted to further increase the sensitivity of the sensor. Furthermore, inverse taper couplers and slotted photonic crystal waveguides are carefully designed and discussed in this paper to reduce the insertion loss of the device so as to increase the device signal-to-noise ratio. The minimum detectable electromagnetic power density is pushed down to 2.05 mW/m2, corresponding to a minimum sensing electric field of 0.61 V/m. This photonic RF sensor has several important advantages over conventional electronics RF sensors based on electrical scheme including high data throughput, compact in size, and great immunity to electromagnetic interference (EMI).","PeriodicalId":122702,"journal":{"name":"SPIE OPTO","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124373201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of terahertz endoscopic system for cancer detection 太赫兹肿瘤内窥镜检测系统的研制

SPIE OPTO Pub Date : 2016-05-02 DOI: 10.1117/12.2209404

P. Doradla, K. Alavi, C. Joseph, R. Giles

{"title":"Development of terahertz endoscopic system for cancer detection","authors":"P. Doradla, K. Alavi, C. Joseph, R. Giles","doi":"10.1117/12.2209404","DOIUrl":"https://doi.org/10.1117/12.2209404","url":null,"abstract":"Terahertz (THz) imaging is emerging as a robust platform for a myriad of applications in the fields of security, health, astronomy and material science. The terahertz regime with wavelengths spanning from microns to millimeters is a potentially safe and noninvasive medical imaging modality for detecting cancers. Endoscopic imaging systems provide high flexibility in examining the interior surfaces of an organ or tissue. Researchers have been working on the development of THz endoscopes with photoconductive antennas, which necessarily operate under high voltage, and require at least two channels to measure the reflected signal from the specimen. This manuscript provides the design and imperative steps involved in the development of a single-channel terahertz endoscopic system. The continuous-wave terahertz imaging system utilizes a single flexible terahertz waveguide channel to transmit and collect the back reflected intrinsic terahertz signal from the sample and is capable of operation in both transmission and reflection modalities. To determine the feasibility of using a terahertz endoscope for cancer detection, the co- and cross-polarized terahertz remittance from human colonic tissue specimens were collected at 584 GHz frequency. The two dimensional terahertz images obtained using polarization specific detection exhibited intrinsic contrast between cancerous and normal regions of fresh colorectal tissue. The level of contrast observed using endoscopic imaging correlates well with the contrast levels observed in the free space ex vivo terahertz reflectance studies of human colonic tissue. The prototype device developed in this study represents a significant step towards clinical endoscopic application of THz technology for in vivo colon cancer screening.","PeriodicalId":122702,"journal":{"name":"SPIE OPTO","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133173338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Multilayers for EUV, soft x-ray and x-ray optics 用于EUV，软x射线和x射线光学的多层材料

SPIE OPTO Pub Date : 2016-05-02 DOI: 10.1117/12.2218081

Zhanshan Wang, Qiushi Huang, Zhong Zhang

引用次数: 0