{"title":"Angle Multiplexed Brewster Controlled Multiband Absorber for Optical Sensing","authors":"Parvendra Kumar;Gaurav Varshney;Pushpa Giri;Shivendra Kumar Jaiswal","doi":"10.1109/LPT.2026.3669218","DOIUrl":"https://doi.org/10.1109/LPT.2026.3669218","url":null,"abstract":"Tin resonators can confine the coupled electromagnetic dipolar field. The interaction of patterned Tin based ultrathin metasurface to optical wave can provide the incident angle dependent multiband resonances offering narrow line-shape optical absorption in visible range. The proposed metasurface can provide a high modulation sensitivity for incident angle. Moreover, the proposed metasurface can provide the Brewster controlled resonances in different plane of polarization of the incident optical wave. Numerical study shows that proposed metasurface can be utilized for refractive index sensing and in the detection of air-borne pathogenic viruses, and blood, cervical and skin cancer.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"38 11","pages":"767-770"},"PeriodicalIF":2.5,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147440557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Direct Detection Φ-OTDR System Based on the Different Pulse Width Method","authors":"Yuhuai Huang;Xiaopeng Dong;Peichao Chen","doi":"10.1109/LPT.2026.3669735","DOIUrl":"https://doi.org/10.1109/LPT.2026.3669735","url":null,"abstract":"Conventional vibration demodulation typically utilizes nearby sample points in conjunction with pulses having relatively wide width for demodulation, which has drawbacks, including inconsistent spatial positions corresponding to adjacent sampling points and limited spatial resolution. This research proposes a novel quantitative vibration demodulation technique based on direct detection <inline-formula> <tex-math>$Phi $ </tex-math></inline-formula>-OTDR to address this issue. At a set repetition frequency, this technique alternately emits optical pulses with comparable but different pulse lengths. To precisely demodulate the vibration phase, it obtains two optical intensity signals at the same fiber position, which have different initial phases but virtually similar vibration-induced phase shifts. Compared with the conventional demodulation method, the proposed technique achieves a signal-to-noise ratio (SNR) improvement of 9.4 dB. By not relying on the data acquisition card’s (DAQ) sampling rate, this technique reduces the acquisition system’s cost and performance requirements while avoiding the spatial resolution deterioration associated with conventional demodulation using nearby sampling points.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"38 11","pages":"771-774"},"PeriodicalIF":2.5,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147440680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"TechRxiv: Share Your Preprint Research with the World!","authors":"","doi":"10.1109/LPT.2026.3664770","DOIUrl":"https://doi.org/10.1109/LPT.2026.3664770","url":null,"abstract":"","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"38 9","pages":"613-613"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11557413","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148236417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}