Chirped Microwave Signals Generation Using a Distributed Feedback Laser With Alternating Structure of Active- and Passive-Cavity

Changda Xu; Ya Jin; Jian Wang; Wenhui Sun; Liangming Xiong; Yinfang Chen; Wei Chen; Ninghua Zhu

doi:10.1109/JPHOT.2021.3103008

IEEE Photonics Journal (Jan 2021)

Chirped Microwave Signals Generation Using a Distributed Feedback Laser With Alternating Structure of Active- and Passive-Cavity

Changda Xu,
Ya Jin,
Jian Wang,
Wenhui Sun,
Liangming Xiong,
Yinfang Chen,
Wei Chen,
Ninghua Zhu

Affiliations

Changda Xu: ORCiD; Institute of Semiconductors, State Key Laboratory of Integrated Optoelectronics, Chinese Academy of Sciences, Beijing, China
Ya Jin: Institute of Semiconductors, State Key Laboratory of Integrated Optoelectronics, Chinese Academy of Sciences, Beijing, China
Jian Wang: Institute of Semiconductors, State Key Laboratory of Integrated Optoelectronics, Chinese Academy of Sciences, Beijing, China
Wenhui Sun: ORCiD; Institute of Semiconductors, State Key Laboratory of Integrated Optoelectronics, Chinese Academy of Sciences, Beijing, China
Liangming Xiong: State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fiber and Cable Joint Stock Limited Company, Wuhan, China
Yinfang Chen: ORCiD; Institute of Semiconductors, State Key Laboratory of Integrated Optoelectronics, Chinese Academy of Sciences, Beijing, China
Wei Chen: ORCiD; Institute of Semiconductors, State Key Laboratory of Integrated Optoelectronics, Chinese Academy of Sciences, Beijing, China
Ninghua Zhu: ORCiD; Institute of Semiconductors, State Key Laboratory of Integrated Optoelectronics, Chinese Academy of Sciences, Beijing, China

DOI: https://doi.org/10.1109/JPHOT.2021.3103008
Journal volume & issue: Vol. 13, no. 4
pp. 1 – 6

Abstract

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We proposed a new type of distributed feedback laser with alternating active- and passive-cavities (APC DFB), which enjoys the same quantum well layer where the butt-joint re-growth process can be avoided. By utilizing the chirp characteristics of the APC DFB laser in a delayed self-heterodyne system, a chirped microwave signal with a sweep range up to 40 GHz and a sweep period of 25 μs is generated. The power fluctuation of the generated signal between 0-40 GHz within 30 minutes does not exceed 3 dB, and the scanning range fluctuates about 600 MHz. And experiment results show that the thermal efficiency of the current is always related to the working environment. In the static wavelength measurement, it is controlled by the injection current; when the chirped signal is generated, it is determined by the bias current. In particular, the waveform and the period as well as the sweep range of the generated chirped microwave signals can be accurately tuned by adjusting the modulating current, which has provided a deeper insight into the photonic generation of microwave signals.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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