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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 12 — Jun. 15, 2014
  • pp: 3500–3503

High-speed wavelength tunable DPSK demodulation using a phase modulator based loop mirror filter

Jia Ge, Hanlin Feng, and Mable P. Fok  »View Author Affiliations


Optics Letters, Vol. 39, Issue 12, pp. 3500-3503 (2014)
http://dx.doi.org/10.1364/OL.39.003500


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Abstract

A high-speed wavelength tunable differential phase-shift-keying (DPSK) signal demodulator is presented using a phase modulator (PM) based fiber loop mirror filter. By controlling the birefringence of the PM inside the loop through electro-optic effect, wavelength tuning speed of tens of GHz and tuning range of over two free spectral ranges are achieved. Stable filter spectra with extinction ratio over 30 dB are obtained through the tuning process. By combining the birefringence of polarization maintaining fiber and PM, error-free demodulation performance is experimentally achieved throughout the wavelength tuning range for DPSK signals with flexible bit-rate range from 2.5 to 10Gb/s. This design significantly improves the wavelength tuning speed and is potentially valuable for high-speed switching and tuning applications.

© 2014 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(060.4510) Fiber optics and optical communications : Optical communications
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 19, 2014
Revised Manuscript: April 28, 2014
Manuscript Accepted: May 3, 2014
Published: June 6, 2014

Citation
Jia Ge, Hanlin Feng, and Mable P. Fok, "High-speed wavelength tunable DPSK demodulation using a phase modulator based loop mirror filter," Opt. Lett. 39, 3500-3503 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-12-3500


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