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Chinese Optics Letters

Chinese Optics Letters


  • Editor: Zhizhan Xu
  • Vol. 10, Iss. 5 — May. 1, 2012
  • pp: 053201–

Pulsewidth-tunable CSRZ-DQPSK signal generation using DPMZMs

Yu Ji, Yan Li, Jian Wu, Xiaobin Hong, Kun Xu, Wei Li, and Jintong Lin  »View Author Affiliations

Chinese Optics Letters, Vol. 10, Issue 5, pp. 053201- (2012)

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This letter proposes and experimentally demonstrates a simple scheme for generating 40-GBaud carrier-suppressed return-to-zero differential quadrature phase shift keying (CSRZ-DQPSK) modulation signals with tunable pulsewidths using two dual-parallel Mach-Zehnder modulators (DPMZMs). The duty cycle of the generated 40-GHz CSRZ-DQPSK pulse train is continuously tuned from 31% to 62%, with the full-width at half-maximum tuned from 7.8 to 15.5 ps, by electrically tuning the delay between the two sine-clock signals in one of the DPMZMs. Error-free performance is achieved after 320-km transmission.

© 2012 Chinese Optics Letters

OCIS Codes
(230.4110) Optical devices : Modulators
(320.5550) Ultrafast optics : Pulses

ToC Category:
Ultrafast Optics

Yu Ji, Yan Li, Jian Wu, Xiaobin Hong, Kun Xu, Wei Li, and Jintong Lin, "Pulsewidth-tunable CSRZ-DQPSK signal generation using DPMZMs," Chin. Opt. Lett. 10, 053201- (2012)

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