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Lett."],"published-print":{"date-parts":[[2025,9,1]]},"abstract":"<jats:p>Optical heterodyne-based signal generation offers a promising pathway for sub-THz wireless systems. However, the frequency and phase instability of free-running lasers degrade the quality of wireless signals considerably. We experimentally demonstrate a wireless transmission of 16 quadrature amplitude modulation (16-QAM) signals using feedforward frequency and phase compensation applied to the heterodyned output of two free-running lasers. The frequency and phase fluctuations of optically heterodyned signals are detected by using a 90\u00b0 hybrid coupler and used to drive an optical IQ modulator for compensation. We successfully transmit 80-Gb\/s 16-QAM signals at 132\u2009GHz over a wireless channel, achieving distances of up to 30 m without carrier phase estimation at the receiver.<\/jats:p>","DOI":"10.1364\/ol.568731","type":"journal-article","created":{"date-parts":[[2025,8,5]],"date-time":"2025-08-05T18:59:48Z","timestamp":1754420388000},"page":"5506","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Photonics-based wireless transmission of 16-QAM signals using feedforward compensation of the frequency and phase noise of free-running lasers"],"prefix":"10.1364","volume":"50","author":[{"given":"Kyungmin","family":"Woo","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05apxxy63","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mat T.","family":"Nguyen","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05apxxy63","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7395-3695","authenticated-orcid":true,"given":"Hoon","family":"Kim","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05apxxy63","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2025,8,29]]},"reference":[{"key":"ol-50-17-5506-R1","doi-asserted-by":"publisher","first-page":"28","DOI":"10.1109\/MVT.2019.2921208","volume":"14","author":"Zhang","year":"2019","journal-title":"IEEE Veh. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}