Abstract
We demonstrate a novel differential phase-shift-keying (DPSK) demodulator based on coherent perfect absorption (CPA). Our DPSK demodulator chip device, which incorporates a silicon ring resonator, two bus waveguide inputs, and monolithically integrated detectors, operates passively at a bit rate of 10 Gbps at telecommunication wavelengths, and fits within a mm-scale footprint. Critical coupling is used to achieve efficient CPA by tuning the gap between the ring and bus waveguides. The device has a vertical eye opening of 12.47 mV and a quality factor exceeding . The fundamental principle behind this photonic circuit can be extended to other formats of integrated demodulators.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Jacob M. Rothenberg, Christine P. Chen, Jason J. Ackert, Jerry I. Dadap, Andrew P. Knights, Keren Bergman, Richard M. Osgood, and Richard R. Grote
Opt. Lett. 41(11) 2537-2540 (2016)
Ke Xu, Liang Wang, Gordon K. P. Lei, Zhenzhou Cheng, Yimin Chen, Chi Yan Wong, Chester Shu, and Hon Ki Tsang
Opt. Lett. 37(16) 3462-3464 (2012)
Lin Zhang, Jeng-Yuan Yang, Yunchu Li, Muping Song, Raymond G. Beausoleil, and Alan E. Willner
Opt. Lett. 33(13) 1428-1430 (2008)