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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 12 — Jun. 15, 2007
  • pp: 1752–1754

Robust optical signal-to-noise ratio monitoring scheme using a phase-modulator-embedded fiber loop mirror

Yuen-Ching Ku, Chun-Kit Chan, and Lian-Kuan Chen  »View Author Affiliations


Optics Letters, Vol. 32, Issue 12, pp. 1752-1754 (2007)
http://dx.doi.org/10.1364/OL.32.001752


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Abstract

We propose and experimentally demonstrate a novel in-band optical signal-to-noise ratio (OSNR) monitoring technique using a phase-modulator-embedded fiber loop mirror. This technique measures the in-band OSNR accurately by observing the output power of a fiber loop mirror filter, where the transmittance is adjusted by an embedded phase modulator driven by a low-frequency periodic signal. The measurement errors are less than 0.5 dB for an OSNR between 0 and 40 dB in a 10 Gbit s non-return-to-zero system. This technique was also shown experimentally to have high robustness against various system impairments and high feasibility to be deployed in practical implementation.

© 2007 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(120.5060) Instrumentation, measurement, and metrology : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 5, 2007
Revised Manuscript: April 15, 2007
Manuscript Accepted: April 19, 2007
Published: June 8, 2007

Citation
Yuen-Ching Ku, Chun-Kit Chan, and Lian-Kuan Chen, "Robust optical signal-to-noise ratio monitoring scheme using a phase-modulator-embedded fiber loop mirror," Opt. Lett. 32, 1752-1754 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-12-1752

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