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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 10703–10709

Low-loss high-speed silicon IQ modulator for QPSK/DQPSK in C and L bands

Kazuhiro Goi, Akira Oka, Hiroyuki Kusaka, Yoshihiro Terada, Kensuke Ogawa, Tsung-Yang Liow, Xiaoguang Tu, Guo-Qiang Lo, and Dim-Lee Kwong  »View Author Affiliations


Optics Express, Vol. 22, Issue 9, pp. 10703-10709 (2014)
http://dx.doi.org/10.1364/OE.22.010703


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Abstract

A low-loss high-speed silicon in-phase (I) quadrature (Q) modulator is designed, fabricated and characterized. The fabricated IQ modulator has a low passive optical loss of 9 dB in C and L bands. Using the modulator, differential quadrature phase-shift keying (DQPSK) transmission at 44.6 Gb/s with differential detection is confirmed with an optical signal-to-noise ratio (OSNR) of 16.3 dB for a bit error rate (BER) of 10−3 and a dispersion tolerance of −96 to 107 ps/nm. Moreover, in digital coherent detection, quadrature phase-shift keying (QPSK) up to 64 Gb/s are achieved with an OSNR of 11.6–11.8 dB for a BER of 10−2 at 1530, 1550, and 1610 nm.

© 2014 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(230.3120) Optical devices : Integrated optics devices
(250.7360) Optoelectronics : Waveguide modulators

ToC Category:
Integrated Optics

History
Original Manuscript: March 7, 2014
Revised Manuscript: April 18, 2014
Manuscript Accepted: April 21, 2014
Published: April 25, 2014

Citation
Kazuhiro Goi, Akira Oka, Hiroyuki Kusaka, Yoshihiro Terada, Kensuke Ogawa, Tsung-Yang Liow, Xiaoguang Tu, Guo-Qiang Lo, and Dim-Lee Kwong, "Low-loss high-speed silicon IQ modulator for QPSK/DQPSK in C and L bands," Opt. Express 22, 10703-10709 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-9-10703


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