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Tunable ultra-broadband microwave frequency combs generation using semiconductor laser injected by intensity-modulated light
Author(s): Xin Jiang; Nian Fang; Lutang Wang
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Paper Abstract

This paper proposes and demonstrates a generation scheme of tunable ultra-broadband microwave frequency combs (MFCs) based on a semiconductor laser injected by intensity-modulated (IM) light. The IM light is obtained by current modulating the master semiconductor laser. Then the IM light is injected into the slave semiconductor laser. The influences of the injection strength, frequency detuning, modulation index and modulation frequency on the MFCs generated were investigated by numerically simulating the rate equations of a semiconductor laser with optical injection of IM light. The simulation results show that under appropriate injection parameters, in an amplitude variation range of ±5dB, the bandwidth of the microwave frequency combs can reach over 60GHz, even 108GHz. The comb space of the MFCs can be tuned by the frequency of the modulation signal. Compared with the scheme of optical injection and current modulation into a slave laser, the proposed scheme has an advantage of 28GHz in peak bandwidth of the MFCs generated under the same conditions. In conclusion, the proposed scheme is a simple and effective generation method of tunable ultra-broadband microwave frequency combs.

Paper Details

Date Published: 15 November 2018
PDF: 9 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109645Z (15 November 2018); doi: 10.1117/12.2506475
Show Author Affiliations
Xin Jiang, Shanghai Univ. (China)
Nian Fang, Shanghai Univ. (China)
Lutang Wang, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yue Yang, Editor(s)

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