Differential phase-shift-keying demodulation by coherent perfect absorption in silicon photonics
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Authors
Ahmed, Asif
Yang, Hao
Rothenberg, Jacob M.
Souhan, Brian
Wang, Zhao
Abrams, Nathan C.
Meng, Xiang
Ingold, Kirk A.
Evans, Christopher C.
Hensley, Joel M.
Issue Date
2018-08-15
Type
journal-article
Language
Keywords
Detectors , Optical filters , Optical systems , Phase shift , Ring resonators , Silicon photonics
Alternative Title
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 3×104. The fundamental principle behind this photonic circuit can be extended to other formats of integrated demodulators.
Description
Citation
Asif Ahmed, Hao Yang, Jacob M. Rothenberg, Brian Souhan, Zhao Wang, Nathan C. Abrams, Xiang Meng, Kirk A. Ingold, Christopher C. Evans, Joel M. Hensley, Keren Bergman, Richard R. Grote, Andrew P. Knights, Jerry I. Dadap, and Richard M. Osgood, "Differential phase-shift-keying demodulation by coherent perfect absorption in silicon photonics," Opt. Lett. 43, 4061-4064 (2018)
Publisher
The Optical Society
License
Journal
Volume
Issue
PubMed ID
ISSN
0146-9592
1539-4794
1539-4794