Binary phase-shift keying by coupling modulation of microrings

We propose a coupling-modulated microring in an add-drop configuration for binary phase-shift keying (BPSK), where data is encoded as 0 and π radian phase-shifts on the optical carrier. The device uses the π radian phase-flip across the zero coupling point in a 2 × 2 Mach-Zehnder interferometer coup...

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Bibliographic Details
Published in:Optics express 2014-08, Vol.22 (17), p.20252-20259
Main Authors: Sacher, Wesley D, Green, William M J, Gill, Douglas M, Assefa, Solomon, Barwicz, Tymon, Khater, Marwan, Kiewra, Edward, Reinholm, Carol, Shank, Steven M, Vlasov, Yurii A, Poon, Joyce K S
Format: Article
Language:English
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Summary:We propose a coupling-modulated microring in an add-drop configuration for binary phase-shift keying (BPSK), where data is encoded as 0 and π radian phase-shifts on the optical carrier. The device uses the π radian phase-flip across the zero coupling point in a 2 × 2 Mach-Zehnder interferometer coupler to produce the modulation. The coupling-modulated microring combines the drive power reduction of resonant modulators with the digital phase response of Mach-Zehnder BPSK modulators. A proof-of-concept device was demonstrated in silicon-on-insulator, showing differential binary phase-shift keying operation at 5 and 10 Gb/s.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.22.020252