{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:05:37Z","timestamp":1760148337229,"version":"build-2065373602"},"reference-count":42,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2023,4,21]],"date-time":"2023-04-21T00:00:00Z","timestamp":1682035200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["62105350","Y201951"],"award-info":[{"award-number":["62105350","Y201951"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004739","name":"Youth Innovation Promotion Association of the Chinese Academy of Sciences","doi-asserted-by":"publisher","award":["62105350","Y201951"],"award-info":[{"award-number":["62105350","Y201951"]}],"id":[{"id":"10.13039\/501100004739","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Interferometric imagers based on integrated optics have the advantages of miniaturization and low cost compared with traditional telescope imaging systems and are expected to be applied in the field of space target detection. Phase measurement of the complex coherence factor is crucial for the image reconstruction of interferometric imaging technology. This study discovers the effect of the phase of the complex coherence factor on the extrema of the interference fringes in the interferometric imager and proposes a method for calculating the phase difference of the complex coherence factor of two interference signals by comparing the extrema of the interferometric fringes in the area of approximate linear change in the envelope shape to obtain the phase information required for imaging. Experiments using two interferometric signals with a phase difference of \u03c0 were conducted to verify the validity and feasibility of the phase difference measurement method. Compared with the existing phase measurement methods, this method does not need to calibrate the position of the zero optical path difference and can be applied to the integrated optical interferometric imager using a single-mode fiber, which also allows the imager to work in a more flexible way. The theoretical phase measurement accuracy of this method is higher than 0.05 \u03c0, which meets the image reconstruction requirements.<\/jats:p>","DOI":"10.3390\/rs15082194","type":"journal-article","created":{"date-parts":[[2023,4,21]],"date-time":"2023-04-21T04:48:11Z","timestamp":1682052491000},"page":"2194","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["A Phase Difference Measurement Method for Integrated Optical Interferometric Imagers"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8394-0142","authenticated-orcid":false,"given":"Jialiang","family":"Chen","sequence":"first","affiliation":[{"name":"Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences, Shanghai Institute of Technical Physics of Chinese Academy of Sciences, Shanghai 200083, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Qinghua","family":"Yu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences, Shanghai Institute of Technical Physics of Chinese Academy of Sciences, Shanghai 200083, China"}]},{"given":"Ben","family":"Ge","sequence":"additional","affiliation":[{"name":"Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences, Shanghai Institute of Technical Physics of Chinese Academy of Sciences, Shanghai 200083, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Chuang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences, Shanghai Institute of Technical Physics of Chinese Academy of Sciences, Shanghai 200083, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Yan","family":"He","sequence":"additional","affiliation":[{"name":"Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences, Shanghai Institute of Technical Physics of Chinese Academy of Sciences, Shanghai 200083, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Shengli","family":"Sun","sequence":"additional","affiliation":[{"name":"Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences, Shanghai Institute of Technical Physics of Chinese Academy of Sciences, Shanghai 200083, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"L2","DOI":"10.1051\/0004-6361\/201832957","article-title":"Orbital and atmospheric characterization of the planet within the gap of the PDS 70 transition disk","volume":"617","author":"Keppler","year":"2018","journal-title":"Astron. 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