Optical sweeper with double-heterodyne frequency-locked loop |
| |
| Authors: | Ishida O. Toba H. Kano F. |
| |
| Affiliation: | NTT Transmission Syst. Labs., Kanagawa, Japan; |
| |
| Abstract: | An optical sweeper is constructed with a 1.5 mu m distributed Bragg reflector (DBR) laser for quick frequency-response measurement of high-speed optical receivers. The laser is successfully controlled over a 16 GHz tuning-range by using a double-heterodyne frequency-locked loop. S/N-improved measurement is also demonstrated at sweep speeds as fast as 1 GHz/s.<> |
| |
| Keywords: | |
|
