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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 7 — Mar. 26, 2012
  • pp: 7663–7671

Chirp-free optical return-to-zero modulation based on a single microring resonator

Lili Sun, Tong Ye, Xiaowen Wang, Linjie Zhou, and Jianping Chen  »View Author Affiliations

Optics Express, Vol. 20, Issue 7, pp. 7663-7671 (2012)

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This paper proposes a chirp-free optical return-to-zero (RZ) modulator using a double coupled microring resonator. Optical RZ modulation is achieved by applying a clock (CLK) driving signal to the input coupling region and a non-return-to-zero (NRZ) driving signal to the output coupling region. Static and time-domain coupled-mode theory (CMT) based dynamic analyse are performed to theoretically investigate its performance in RZ modulation. The criteria to realize RZ modulation are deduced. Various RZ modulation formats, including RZ phase-shift-keying (RZ-PSK), carrier-suppressed RZ (CSRZ), and RZ intensity modulation formats, can be implemented by using CLK and NRZ signals with different combinations of polarities. Numerical simulations are performed and the feasibility of our modulator at 10 Gbit/s for the multiple RZ modulation formats is verified.

© 2012 OSA

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:
Integrated Optics

Original Manuscript: December 15, 2011
Revised Manuscript: January 31, 2012
Manuscript Accepted: February 16, 2012
Published: March 20, 2012

Lili Sun, Tong Ye, Xiaowen Wang, Linjie Zhou, and Jianping Chen, "Chirp-free optical return-to-zero modulation based on a single microring resonator," Opt. Express 20, 7663-7671 (2012)

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