Title :
Improved performance of a hybrid radio/fiber system using a directly modulated laser transmitter with external injection
Author :
Kaszubowska, A. ; Anandarajah, P. ; Barry, L.P.
Author_Institution :
Sch. of Electron. Eng., Dublin City Univ., Ireland
Abstract :
A directly modulated laser diode with external light injection is used to generate microwave optical signals for a hybrid radio/fiber system. The external light injection greatly enhances the frequency response of the laser, and thus, significantly improves the overall performance of the hybrid system. Experimental results show a 14-dB improvement in system performance for the externally injected laser in a hybrid radio/fiber communication link used for distributing 155-Mb/s data signals.
Keywords :
microwave links; microwave photonics; mobile radio; optical fibre subscriber loops; radio access networks; 155 Mbit/s; BPSK; directly modulated laser transmitter; external injection; frequency response; high-capacity microwave access networks; hybrid radio/fiber system; improved performance; microwave optical signals; microwave photonics; modulation bandwidth; optically fed microwave wireless network; semiconductor laser diode; Diode lasers; Fiber lasers; Frequency response; Hybrid power systems; Masers; Microwave generation; Optical fiber communication; Optical modulation; Signal generators; System performance;
Journal_Title :
Photonics Technology Letters, IEEE
