Title :
Multifrequency laser having integrated amplified output coupler for high-extinction-ratio modulation with single-mode behavior
Author :
Doerr, Christopher R. ; Joyner, Charles H. ; Gripp, J.
Author_Institution :
Bell Lab., Lucent Technol., Holmdel, NJ, USA
Abstract :
We present a 16-channel waveguide grating router multifrequency laser that can be modulated with a 250-MHz bandwidth, a 50-dB extinction ratio, and constant single-mode behavior. We demonstrate a means for immunizing the singlemode lasing against unwanted backreflections from the integrated modulation amplifier. The laser is especially suitable for fiber dispersion-map measurements.
Keywords :
diffraction gratings; electro-optical modulation; laser modes; optical couplers; optical fibre dispersion; optical transmitters; semiconductor lasers; telecommunication network routing; waveguide lasers; 16-channel waveguide grating router multifrequency laser; 250 MHz; MHz bandwidth; constant single-mode behavior; extinction ratio; fiber dispersion-map measurements; high-extinction-ratio modulation; integrated amplified output coupler; integrated modulation amplifier; multifrequency laser; single-mode behavior; singlemode lasing; unwanted backreflections; Chirp; Erbium-doped fiber lasers; Gratings; Optical amplifiers; Optical coupling; Optical pulses; Pulse amplifiers; Pulse modulation; Semiconductor lasers; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
