Title :
An 8-channel digitally tunable transmitter with electroabsorption modulated output by selective-area epitaxy
Author :
Joyner, C.H. ; Zirngibl, M. ; Centanni, J.C.
Author_Institution :
Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
We demonstrate an 8-frequency digitally tunable laser based on a waveguide grating router with an electroabsorption modulated output. The laser wavelengths range from 1.567 to 1.580 μm with channel spacings of 200 GHz (1.6 nm). The modulator extinction is -10 dB/VN with a -5-V bias. A unique output coupler design delivers an ASE noise suppression of -55 dB//spl Aring/.
Keywords :
diffraction gratings; electro-optical modulation; electroabsorption; laser tuning; optical couplers; optical noise; optical transmitters; superradiance; wavelength division multiplexing; 1.567 to 1.580 mum; 5 V; 8-channel digitally tunable transmitter; 8-frequency digitally tunable laser; ASE noise suppression; channel spacings; electroabsorption modulated output; laser wavelengths; modulator extinction; optical transmitters; output coupler design; selective-area epitaxy; waveguide grating router; Arm; Channel spacing; Digital modulation; Epitaxial growth; Fiber lasers; Gratings; Optical coupling; Optical design; Transmitters; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
