Infrared and Laser Engineering, Volume. 45, Issue 8, 806004(2016)
Highly linear microwave photonic link based on nonlinearity of DFB laser
A scheme of dynamic range optimization for Microwave Photonic Link with Distributed Feedback laser(DFB) was proposed. The nonlinearity of the laser was experimentally studied. The relationship between the bias current and the linear performance of the DFB laser was analyzed experimentally. Based on the experimental results, the linear system of Mach-Zehnder modulator(MZM) system was established. The experimental results show that the third order intermodulation of the system is suppressed, when the center frequency of the input frequency signal is 4 GHz and two tone separation is 10 kHz, the three order distortion is suppressed 23.1 dB and the spurious-free dynamic range can be improved by 8.68 dB.
Get Citation
Copy Citation Text
Kang Zijian, Gu Yiying, Zhu Wenwu, Fan Feng, Hu Jingjing, Zhao Mingshan. Highly linear microwave photonic link based on nonlinearity of DFB laser[J]. Infrared and Laser Engineering, 2016, 45(8): 806004
Category: 激光技术及应用
Received: Dec. 20, 2015
Accepted: Jan. 3, 2016
Published Online: Aug. 29, 2016
The Author Email: Zijian Kang (980861928@qq.com)