Title :
Linearization of DFB laser diode by external light-injected cross-gain modulation for radio-over-fiber link
Author :
Lee, Sang-Hoon ; Kang, Jeung-Mo ; Choi, In-Hyuk ; Han, Sang-Kook
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
fDate :
7/1/2006 12:00:00 AM
Abstract :
A novel linearization technique of distributed-feedback laser diode in analog optical transmitter for radio-over-fiber (RoF) link was proposed. The proposed scheme was based on a light-injection technique using cross-gain modulation effect. According to the proposed idea, a linearized RoF transmitter module was implemented and evaluated. The enhanced performance of carrier-to-noise ratio and spurious-free dynamic range were experimentally demonstrated in a wide range of radio-frequency (RF) applications. The experimental results show that the proposed scheme can be applicable for broadband RF optical transmission applications.
Keywords :
distributed feedback lasers; microwave photonics; optical modulation; optical transmitters; radio-over-fibre; semiconductor lasers; DFB laser diode; carrier-to-noise ratio; cross-gain modulation; distributed-feedback laser diode; light-injection; linearization; optical transmitter; radio-over-fiber link; spurious-free dynamic range; Diode lasers; Nonlinear optics; Optical feedback; Optical filters; Optical interferometry; Optical modulation; Optical saturation; Optical transmitters; Optical wavelength conversion; Radio frequency; Cross-gain modulation (XGM); light injection; linearization; radio-over-fiber (RoF) link;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.878161
