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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 7852–7864

Low noise optical multi-carrier generation using optical-FIR filter for ASE noise suppression in re-circulating frequency shifter loop

Jiachuan Lin, Lixia Xi, Jianrui Li, Xiaoguang Zhang, Xia Zhang, and Shahab Ahmad Niazi  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 7852-7864 (2014)

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In this paper, an improved multi-carrier generation scheme based on single-side-band recirculating frequency shifter with optical finite impulse response (FIR) filter for amplified spontaneous emission (ASE) noise suppression is proposed and experimentally demonstrated. The carrier-to-noise-ratio (CNR) instead of tone-to-noise-ratio (TNR) is introduced to more reasonably and exactly evaluate the signal-to-noise-ratio of a multi-carrier source with non-flat noise floor. We have experimentally attain the worst case CNR of 22.5dB and 19.1dB for generated 50 and 69 flat low noise carriers, which has shown significant improvement than the previous cited works based on recirculating frequency shifter.

© 2014 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2630) Fiber optics and optical communications : Frequency modulation

ToC Category:
Optical Communications

Original Manuscript: January 27, 2014
Revised Manuscript: March 16, 2014
Manuscript Accepted: March 17, 2014
Published: March 27, 2014

Jiachuan Lin, Lixia Xi, Jianrui Li, Xiaoguang Zhang, Xia Zhang, and Shahab Ahmad Niazi, "Low noise optical multi-carrier generation using optical-FIR filter for ASE noise suppression in re-circulating frequency shifter loop," Opt. Express 22, 7852-7864 (2014)

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