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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 6 — Mar. 15, 2009
  • pp: 785–787

Chirp-free optical modulation using a silicon push–pull coupling microring

Tong Ye, Yifeng Zhou, Cishuo Yan, Yuntao Li, and Yikai Su  »View Author Affiliations

Optics Letters, Vol. 34, Issue 6, pp. 785-787 (2009)

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We propose a silicon ring-based optical modulation method to perform chirp-free optical modulations. In this scheme, we locate the light to be modulated at the resonance of the ring and tune the coupling coefficient between the ring and the straight waveguide by using a push–pull coupling structure. The chirp-free phase modulation can be achieved by varying the coupling coefficient in a large range, which can modify the coupling condition of the ring such that the input light experiences an abrupt phase shift of π at the output. If the coupling coefficient is adjusted in a small range such that the coupling condition of the ring is kept unchanged, only the intensity of the light will be modulated. This leads to chirp-free intensity modulation. Our simulations performed at 10 Gbits s confirm the feasibility of the proposal.

© 2009 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4080) Fiber optics and optical communications : Modulation
(130.0130) Integrated optics : Integrated optics

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 6, 2009
Manuscript Accepted: January 22, 2009
Published: March 10, 2009

Tong Ye, Yifeng Zhou, Cishuo Yan, Yuntao Li, and Yikai Su, "Chirp-free optical modulation using a silicon push-pull coupling microring," Opt. Lett. 34, 785-787 (2009)

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