A rapidly wavelength-switching DFB diode laser array integrated with a SOA

Kanglong Lin; Kui Liu; Tao Fang; Xiangfei Chen

doi:10.1117/12.2538006

20 November 2019 A rapidly wavelength-switching DFB diode laser array integrated with a SOA

Kanglong Lin, Kui Liu, Tao Fang, Xiangfei Chen

Proceedings Volume 11192, Real-time Photonic Measurements, Data Management, and Processing IV; 1119207 (2019) https://doi.org/10.1117/12.2538006
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

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.

Citation Download Citation

Kanglong Lin, Kui Liu, Tao Fang, and Xiangfei Chen "A rapidly wavelength-switching DFB diode laser array integrated with a SOA", Proc. SPIE 11192, Real-time Photonic Measurements, Data Management, and Processing IV, 1119207 (20 November 2019); https://doi.org/10.1117/12.2538006

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