Tunable optical comb generation based on carrier-suppressed intensity modulation and phase modulation

Xihua Zou; Wei Pan; Jianping Yao

Chinese Optics Letters, 2010, 8 (5): 468, Published Online: May. 11, 2010

Tunable optical comb generation based on carrier-suppressed intensity modulation and phase modulation Download： 782次

论文大纲

Xihua Zou ^1,2Wei Pan ¹Jianping Yao ²

Author Affiliations

¹ Center for Information Photonics and Communications, Southwest Jiaotong University, Chendu 610031, China

² Microwave Photonics Research Laboratory, University of Ottawa, ON K1N 6N5, Canada

光学频率梳强度调制相位调制 060.2380 Fiber optics sources and detectors 230.4110 Modulators 060.2330 Fiber optics communications

Abstract

An approach to generate a flat optical comb with tunable comb spacing and adjustable comb number is proposed. In the proposed approach, a Mach-Zehnder modulator (MZM), being biased to generate two carrier-suppressed first-order sidebands, is cascaded with a phase modulator. The two optical sidebands are then sent to the phase modulator to generate two identical, but frequency-shifted phase-modulated spectra. Thanks to the complementary nature of the two adjacent comb lines in the phase-modulated spectra, the overlapping of the two spectra would lead to the generation of a flat optical comb. Since only the phase modulation index or the microwave power is needed to be adjusted, the system is easy to be implemented with tunable comb spacing and adjustable comb number. Numerical simulations are performed, and the approach is verified by an experiment.

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Xihua Zou, Wei Pan, Jianping Yao. Tunable optical comb generation based on carrier-suppressed intensity modulation and phase modulation[J]. Chinese Optics Letters, 2010, 8(5): 468.

Tunable optical comb generation based on carrier-suppressed intensity modulation and phase modulation Download： 782次

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