{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:04:41Z","timestamp":1760241881172,"version":"build-2065373602"},"reference-count":30,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2018,10,12]],"date-time":"2018-10-12T00:00:00Z","timestamp":1539302400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002851","name":"China Academy of Engineering Physics","doi-asserted-by":"publisher","award":["JCKY2016212A506-0502"],"award-info":[{"award-number":["JCKY2016212A506-0502"]}],"id":[{"id":"10.13039\/501100002851","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Ministry of Science and Technology of China","award":["2017YFB0503100"],"award-info":[{"award-number":["2017YFB0503100"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Interferometric optomechanical accelerometers provide superior resolution, but the application is limited due to the non-ambiguity range that is always less than half of the wavelength, which corresponds to the order of mg. This paper proposes a novel acceleration measurement method based on synthetic wavelength and single wavelength superheterodyne interferometry to address this issue. Two acousto-optical modulators and several polarizers are introduced to the two-wavelength interferometry to create four beams with different frequencies and polarization states, and two ultra-narrow bandwidth filters are used to realize the single wavelength measurement simultaneously. This technique offers the possibility to expand the non-ambiguity range without compromising the high resolution. Also, the superheterodyne phase measurement and the corresponding processing algorithm are given to enable real-time measurement. A prototype is built and the preliminary experimental results are compared with the simulation results, showing good agreement. The results prove an estimated acceleration measurement resolution of around 10 \u03bcg and a non-ambiguity range of larger than 200 mg, which is more than 100 times that of the single wavelength-based optical accelerometer.<\/jats:p>","DOI":"10.3390\/s18103417","type":"journal-article","created":{"date-parts":[[2018,10,12]],"date-time":"2018-10-12T02:58:04Z","timestamp":1539313084000},"page":"3417","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Optical Acceleration Measurement Method with Large Non-ambiguity Range and High Resolution via Synthetic Wavelength and Single Wavelength Superheterodyne Interferometry"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4195-7602","authenticated-orcid":false,"given":"Qianbo","family":"Lu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China"}]},{"given":"Dexin","family":"Pan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China"}]},{"given":"Jian","family":"Bai","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China"}]},{"given":"Kaiwei","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China"}]}],"member":"1968","published-online":{"date-parts":[[2018,10,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1109\/7361.983473","article-title":"Inertial sensor technology trends","volume":"1","author":"Barbour","year":"2001","journal-title":"IEEE Sens. 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