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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 10 — May. 7, 2012
  • pp: 11037–11045

Single silicon wire waveguide based delay line interferometer for DPSK demodulation

Rai Kou, Hidetaka Nishi, Tai Tsuchizawa, Hiroshi Fukuda, Hiroyuki Shinojima, and Koji Yamada  »View Author Affiliations


Optics Express, Vol. 20, Issue 10, pp. 11037-11045 (2012)
http://dx.doi.org/10.1364/OE.20.011037


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Abstract

We experimentally demonstrate a high-quality phase shift keying demodulator based on a silicon photonic wire waveguide. Since the birefringence of the waveguide generates extremely huge differential group delay, an ultra-compact and high-extinction-ratio delay line interferometer is devised in TE and TM modes. We firstly calculated and simulated the requirements for propagation length and waveguide’s dimensions. Then, we measured the interference spectrum, eye pattern, bit error rate, and temperature dependence to ascertain its feasibility for DPSK demodulation. For a 2.8 cm-long wire waveguide, a free spectral range of 9.6 GHz and an error-free DPSK demodulation around 10 Gb/s are obtained.

© 2012 OSA

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation
(130.3120) Integrated optics : Integrated optics devices
(230.7380) Optical devices : Waveguides, channeled
(070.2615) Fourier optics and signal processing : Frequency filtering

ToC Category:
Integrated Optics

History
Original Manuscript: February 29, 2012
Revised Manuscript: April 19, 2012
Manuscript Accepted: April 23, 2012
Published: April 27, 2012

Citation
Rai Kou, Hidetaka Nishi, Tai Tsuchizawa, Hiroshi Fukuda, Hiroyuki Shinojima, and Koji Yamada, "Single silicon wire waveguide based delay line interferometer for DPSK demodulation," Opt. Express 20, 11037-11045 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-10-11037


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