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Wide tunable double ring resonator coupled lasers

2002; Institute of Electrical and Electronics Engineers; Volume: 14; Issue: 5 Linguagem: Inglês

10.1109/68.998697

1941-0174

Bin Liu, Ali Shakouri, John E. Bowers,

Advanced Fiber Laser Technologies

A double ring resonator coupled laser (DR-RCL) is proposed and analyzed in this letter. Benefiting from the uniform peak transmission, narrow bandwidth and other superior characteristics of traveling wave supported high-Q resonators, DR-RCLs offers many promising advantages over the conventional tunable lasers, including ultra wide wavelength tuning range, high side mode suppression ratio, uniform threshold and efficiency, narrow linewidth, low frequency chirp, and simple fabrication. A DR-RCL with a moderate optical loss /spl sim/10 dB/cm in the ring resonators can achieve a wavelength tuning enhancement of /spl sim/50. With such a large tuning leverage, DR-RCLs could utilize the electrooptic effects to achieve ultrafast tuning speed with a wide tuning range covering the material gain bandwidth.