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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 16 — Aug. 3, 2009
  • pp: 13346–13353

Optical phase erasure based on FWM in HNLF enabling format conversion from 320-Gb/s RZ-DQPSK to 160-Gb/s RZ-DPSK

Guo-Wei Lu and Tetsuya Miyazaki  »View Author Affiliations


Optics Express, Vol. 17, Issue 16, pp. 13346-13353 (2009)
http://dx.doi.org/10.1364/OE.17.013346


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Abstract

Through four-wave mixing (FWM) process in highly-nonlinear fiber (HNLF) or semiconductor device, the phase-modulation depth of one converted FWM component could be doubled compared with that of the original input signal. Therefore, with a multilevel phase-modulated signal and a CW light as inputs, after FWM process in a nonlinear media, phase pattern (0, π) carried in the input multilevel phase-modulated signal will not be transferred to one converted FWM component, which could be referred to as an optical phase erasure process. We experimentally demonstrated format conversion from 320-Gb/s return-to-zero differential quadrature phase-shift keying (RZ-DQPSK) to 160-Gb/s return-to-zero differential phase-shift keying (RZ-DPSK) through the proposed all-optical phase erasure scheme. The phase information carried in the converted binary RZ-DPSK is logically equal to the input Q-component, or a logical XOR operation result between I and Q components of the input RZ-DQPSK, which correspond to a serial or parallel DQPSK transmitter for the input RZ-DQPSK signal. It can be applied to erase a binary tributary from a multilevel modulation format.

© 2009 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 19, 2009
Revised Manuscript: June 14, 2009
Manuscript Accepted: July 8, 2009
Published: July 20, 2009

Citation
Guo-Wei Lu and Tetsuya Miyazaki, "Optical phase erasure based on FWM in HNLF enabling format conversion from 320-Gb/s RZDQPSK to 160-Gb/s RZ-DPSK," Opt. Express 17, 13346-13353 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-16-13346


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References

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