Title :
Optical injection-locked gain-lever distributed Bragg reflector lasers with enhanced RF performance
Author :
Sung, H.-K. ; Jung, Thomas ; Tishinin, D. ; Liou, K.Y. ; Tsang, W.T. ; Wu, Ming C.
Author_Institution :
Electr. Eng. Dept., UCLA, Los Angeles, CA, USA
Abstract :
Directly modulated fiber-optic links offers significant advantages in system cost and complexity. However, they often suffer from high link loss and inferior RF performance compared with externally modulated links. In this paper, we have experimentally investigated the amplitude modulation (AM) efficiency, modulation bandwidth, and the nonlinear distortions of a directly-modulated gain-lever distributed Bragg reflector (DBR) laser under external light injection for the first time. By combining gain-lever modulation with optical injection locking, increased modulation efficiency (10 dB) and bandwidth (3 times) as well as suppressed third-order intermodulation distortion (15 dB) have been achieved simultaneously.
Keywords :
amplitude modulation; distributed Bragg reflector lasers; laser mode locking; microwave photonics; optical communication equipment; optical distortion; optical fibre losses; optical modulation; RF performance; amplitude modulation efficiency; directly modulated fiber-optic links; external light injection; gain-lever distributed Bragg reflector lasers; link loss; modulation bandwidth; nonlinear distortions; optical injection locking; suppressed third-order intermodulation distortion; Amplitude modulation; Bandwidth; Costs; Distributed Bragg reflectors; Fiber lasers; Fiber nonlinear optics; Nonlinear optics; Optical distortion; Optical modulation; Radio frequency;
Conference_Titel :
Microwave Photonics, 2004. MWP'04. 2004 IEEE International Topical Meeting on
Print_ISBN :
0-7803-8491-1
DOI :
10.1109/MWP.2004.1396880
