Pub Date : 2024-10-09DOI: 10.1109/JLT.2024.3474439
{"title":"Journal of Lightwave Technology Publication Information","authors":"","doi":"10.1109/JLT.2024.3474439","DOIUrl":"https://doi.org/10.1109/JLT.2024.3474439","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10712163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-09DOI: 10.1109/JLT.2024.3474416
{"title":"Journal of Lightwave Technology Information for Authors","authors":"","doi":"10.1109/JLT.2024.3474416","DOIUrl":"https://doi.org/10.1109/JLT.2024.3474416","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10712158","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142408908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-04DOI: 10.1109/JLT.2024.3474649
Ningyuan Zhong;Yongtao Du;Xihua Zou;Xiong Deng;Wenlin Bai;Chao Yang;Wei Pan;Lianshan Yan
High resolution is the decisive factor for detecting, recognizing, and tracking tiny objects in radars. However, high resolution usually requires large instantaneous bandwidth, imposing critical challenges on device bandwidth and available spectrum resources. An emerging approach is the coherent fusion processing over multiple narrow bandwidths, to obtain a large equivalent bandwidth and thus an enhanced spectral efficiency. Nevertheless, multiple receivers are necessary to separate multiple identical-frequency intermediate-frequency (IF) de-chirped signals in conventional multi-band linear frequency modulation (LFM) radars, leading to complex hardware and scale limitations. In this paper, a novel compact multi-chirp-rate & multi-band inverse synthetic aperture radar (ISAR) is proposed and experimentally demonstrated. Here a “ Multiple in One ” photonic integrated transceiver is designed to simultaneously process multiple IF signals resulting from multi-chirp-rate & multi-band scheme in only one channel, which greatly simplifies the system. In the integrated transceiver, two cascaded Mach-Zehnder modulators (MZMs) are fabricated via lithium-niobate-on-insulator platform. The first MZM with a half-wave voltage as low as 1.3V, is capable of generating the multi-chirp-rate & multi-band signal under a large modulation index, while the second one targets for photonic de-chirping the echo signal. In experiments, a multi-chirp-rate & multi-band signal covering 3.6 GHz to 16.0 GHz is generated by applying a seed LFM signal with a 0.4-GHz bandwidth, consisting of four bands (0.4, 0.8, 1.2 and 1.6-GHz bandwidth) and four chirp rates (0.8 × 10 14 , 1.6 × 10 14 , 2.4 × 10 14 , and 3.2 × 10 14 s −2 ). Then a range resolution of 1.26 cm is obtained for target detection by coherent fusion processing, corresponding to a 12.4-GHz equivalent bandwidth arising from only 0.4 GHz seed bandwidth. Moreover, three reflectors are well recognized in ISAR turntable imaging, indicating high range resolution, compact structure, and high spectral efficiency.
{"title":"Multiple-In-One Photonic Integrated Transceiver for Multi-Chirp-Rate & Multi-Band ISAR System and Coherent Fusion Processing","authors":"Ningyuan Zhong;Yongtao Du;Xihua Zou;Xiong Deng;Wenlin Bai;Chao Yang;Wei Pan;Lianshan Yan","doi":"10.1109/JLT.2024.3474649","DOIUrl":"https://doi.org/10.1109/JLT.2024.3474649","url":null,"abstract":"High resolution is the decisive factor for detecting, recognizing, and tracking tiny objects in radars. However, high resolution usually requires large instantaneous bandwidth, imposing critical challenges on device bandwidth and available spectrum resources. An emerging approach is the coherent fusion processing over multiple narrow bandwidths, to obtain a large equivalent bandwidth and thus an enhanced spectral efficiency. Nevertheless, multiple receivers are necessary to separate multiple identical-frequency intermediate-frequency (IF) de-chirped signals in conventional multi-band linear frequency modulation (LFM) radars, leading to complex hardware and scale limitations. In this paper, a novel compact multi-chirp-rate & multi-band inverse synthetic aperture radar (ISAR) is proposed and experimentally demonstrated. Here a “\u0000<italic>Multiple in One</i>\u0000” photonic integrated transceiver is designed to simultaneously process multiple IF signals resulting from multi-chirp-rate & multi-band scheme in only one channel, which greatly simplifies the system. In the integrated transceiver, two cascaded Mach-Zehnder modulators (MZMs) are fabricated via lithium-niobate-on-insulator platform. The first MZM with a half-wave voltage as low as 1.3V, is capable of generating the multi-chirp-rate & multi-band signal under a large modulation index, while the second one targets for photonic de-chirping the echo signal. In experiments, a multi-chirp-rate & multi-band signal covering 3.6 GHz to 16.0 GHz is generated by applying a seed LFM signal with a 0.4-GHz bandwidth, consisting of four bands (0.4, 0.8, 1.2 and 1.6-GHz bandwidth) and four chirp rates (0.8 × 10\u0000<sup>14</sup>\u0000, 1.6 × 10\u0000<sup>14</sup>\u0000, 2.4 × 10\u0000<sup>14</sup>\u0000, and 3.2 × 10\u0000<sup>14</sup>\u0000 s\u0000<sup>−2</sup>\u0000). Then a range resolution of 1.26 cm is obtained for target detection by coherent fusion processing, corresponding to a 12.4-GHz equivalent bandwidth arising from only 0.4 GHz seed bandwidth. Moreover, three reflectors are well recognized in ISAR turntable imaging, indicating high range resolution, compact structure, and high spectral efficiency.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-17DOI: 10.1109/jlt.2024.3462534
José García Echeverría, Daniel Musat, Ataollah Mahsafar, Kaveh R. Mojaver, David Rolston, Glenn Cowan, Odile Liboiron-Ladouceur
{"title":"Self-calibrated Microring Weight Function for Neuromorphic Optical Computing","authors":"José García Echeverría, Daniel Musat, Ataollah Mahsafar, Kaveh R. Mojaver, David Rolston, Glenn Cowan, Odile Liboiron-Ladouceur","doi":"10.1109/jlt.2024.3462534","DOIUrl":"https://doi.org/10.1109/jlt.2024.3462534","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improving Transmission Efficiency in Optical Wireless Networks with IR Radiative Element Clusters and Phased Array Apertures","authors":"Sharadhi Gunathilake, Ampalavanapillai Nirmalathas, Kosala Herath, Malin Premaratne","doi":"10.1109/jlt.2024.3462754","DOIUrl":"https://doi.org/10.1109/jlt.2024.3462754","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-16DOI: 10.1109/jlt.2024.3461734
Xingyu Lu, Junpan Li, Yuqiao Li, Tao Huang, Yi Li, Yanbing Liu
{"title":"Streamlined Complex-valued Neural Network Equalizer Based on Extraction and Fusion Technique in Visible Light Communication","authors":"Xingyu Lu, Junpan Li, Yuqiao Li, Tao Huang, Yi Li, Yanbing Liu","doi":"10.1109/jlt.2024.3461734","DOIUrl":"https://doi.org/10.1109/jlt.2024.3461734","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-13DOI: 10.1109/jlt.2024.3461157
Kritarth Srivastava, Nitin Bhatia
{"title":"An All-Fiber Multimode Interference Device for Power Splitting in Few Mode Fiber Networks","authors":"Kritarth Srivastava, Nitin Bhatia","doi":"10.1109/jlt.2024.3461157","DOIUrl":"https://doi.org/10.1109/jlt.2024.3461157","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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