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Reid, Douglas A.; Bondarczuk, Krzysztof; Dexter, Karl J.; Shi, Kai; Anandarajah, Prince M.; Barry, Liam P.; Guo, Wei Hua; O'Dowd, John; Lynch, Michael; Bradley, Ann Louise; Donegan, John Francis (2010)
Publisher: Institute of Electrical and Electronics Engineers
Languages: English
Types: Article
Subjects: Optical communication, optical performance monitoring; optical signal-to-noise ratio (OSNR) measurement; phase-shift keying (PSK); two-photon absorption (TPA);
A two-photon absorption microcavity-based technique for monitoring in-band optical signal-to-noise ratio (OSNR) in nonreturn-to-zero phase-shift-keying systems is presented. Experiments using a 10-Gb/s differential phase-shift-keying system showed that accurate measurements ( 1 dB) were possible for OSNRs in excess of 20 dB.

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