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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 26 — Dec. 30, 2013
  • pp: 32680–32689

A 16 GHz silicon-based monolithic balanced photodetector with on-chip capacitors for 25 Gbaud front-end receivers

Mohammed Shafiqul Hai, Meer Nazmus Sakib, and Odile Liboiron-Ladouceur  »View Author Affiliations

Optics Express, Vol. 21, Issue 26, pp. 32680-32689 (2013)

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In this paper, a Germanium-on-Silicon balanced photodetector (BPD) with integrated biasing capacitors is demonstrated for highly compact monolithic 100 Gb/s coherent receivers or 25 Gbaud front-end receivers for differential or quadrature phase shift keying. The balanced photodetector has a bandwidth of approximately 16.2 GHz at a reverse bias of −4.5 V. The balanced photodetector exhibits a common mode rejection ratio (CMRR) of 30 dB. For balanced detection of return-to-zero (RZ) differential phase shift keying (DPSK) signal, the photodetector has a sensitivity of −6.95 dBm at the BER of 10−12. For non-return-to-zero (NRZ) on off keying (OOK) signal, the measured BER is 1.0´10−12 for a received power of −1.65 dBm at 25 Gb/s and 9.9´10−5 for −0.34 dBm at 30 Gb/s. The total footprint area of the monolithic front-end receiver is less than 1 mm2. The BPD is packaged onto a ceramic substrate with two DC and one RF connectors exhibits a bandwidth of 15.9 GHz.

© 2013 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(230.0230) Optical devices : Optical devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: October 14, 2013
Revised Manuscript: December 5, 2013
Manuscript Accepted: December 7, 2013
Published: December 24, 2013

Mohammed Shafiqul Hai, Meer Nazmus Sakib, and Odile Liboiron-Ladouceur, "A 16 GHz silicon-based monolithic balanced photodetector with on-chip capacitors for 25 Gbaud front-end receivers," Opt. Express 21, 32680-32689 (2013)

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