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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 18 — Aug. 27, 2012
  • pp: 19726–19734

Integrated hybrid Si/InGaAs 50 Gb/s DQPSK receiver

Stefano Faralli, Kimchau N. Nguyen, Jonathan D. Peters, Daryl T. Spencer, Daniel J. Blumenthal, and John E. Bowers  »View Author Affiliations

Optics Express, Vol. 20, Issue 18, pp. 19726-19734 (2012)

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A monolithic 25 Gbaud DQPSK receiver based on delay interferometers and balanced detection has been designed and fabricated on the hybrid Si/InGaAs platform. The integrated 30 µm long InGaAs p-i-n photodetectors have a responsivity of 0.64 A/W at 1550 nm and a 3dB bandwidth higher than 25 GHz. The delay interferometer shows a delay time of 39.2 ps and an extinction ratio higher than 20 dB. The demodulation of a 25 Gb/s DPSK signal by a single branch of the receiver demonstrates its correct working principle.

© 2012 OSA

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(060.5060) Fiber optics and optical communications : Phase modulation
(130.0130) Integrated optics : Integrated optics
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: July 2, 2012
Revised Manuscript: August 2, 2012
Manuscript Accepted: August 2, 2012
Published: August 13, 2012

Stefano Faralli, Kimchau N. Nguyen, Jonathan D. Peters, Daryl T. Spencer, Daniel J. Blumenthal, and John E. Bowers, "Integrated hybrid Si/InGaAs 50 Gb/s DQPSK receiver," Opt. Express 20, 19726-19734 (2012)

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