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A rapidly wavelength-switching DFB diode laser array integrated with a SOA
Author(s): Kanglong Lin; Kui Liu; Tao Fang; Xiangfei Chen
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Paper Abstract

We propose and fabricate a rapidly wavelength switching DFB laser array based on Reconstructed-Equivalent-Chirp technique. A Semiconductor Optical Amplifier(SOA) is applied to enhance and balance the output optical power. The module covers 8 channels from 1554.5nm to 1566.1nm with an interval of 1.6nm. To tune the wavelength on the microsecond scale, we adopt a combination of a MCU and a FPGA as the controlling core to turn on and off the driving current of 8 lasers on the DFB laser array through a collector feedback circuit, and the switching time between 2 channels is well controlled within 300ns. The side mode suppression ratios(SMSRs) of all channels are above 50dB and the output power are guaranteed above 10dBm with the SOA providing 14dBm saturation output power.

Paper Details

Date Published: 20 November 2019
PDF: 7 pages
Proc. SPIE 11192, Real-time Photonic Measurements, Data Management, and Processing IV, 1119207 (20 November 2019); doi: 10.1117/12.2538006
Show Author Affiliations
Kanglong Lin, Nanjing Univ. (China)
Kui Liu, Nanjing Univ. (China)
Tao Fang, Nanjing Univ. (China)
Xiangfei Chen, Nanjing Univ. (China)


Published in SPIE Proceedings Vol. 11192:
Real-time Photonic Measurements, Data Management, and Processing IV
Ming Li; Bahram Jalali; Mohammad Hossein Asghari, Editor(s)

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