Title :
Digitally tunable channel dropping filter/equalizer based on waveguide grating router and optical amplifier integration
Author :
Zirngibl, M. ; Joyner, C.H. ; Glance, B.
Author_Institution :
Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA
fDate :
4/1/1994 12:00:00 AM
Abstract :
We demonstrate a novel and powerful device that permits individual and simultaneous control of all the wavelength channels in a WDM system. The device is based on the monolithic integration of two identical waveguide grating routers with semiconductor optical amplifiers. By biasing appropriately the individual amplifier, each WDM channel can be amplified, detected or modulated. The device exhibits a channel bandwidth of 60 GHz, a channel spacing of 195 GHz and a crosstalk of /spl minus/19 dB.<>
Keywords :
diffraction gratings; integrated optics; integrated optoelectronics; laser tuning; optical communication equipment; optical filters; optical waveguides; semiconductor lasers; wavelength division multiplexing; 60 GHz; WDM system; channel bandwidth; crosstalk; digitally tunable channel dropping filter/equalizer; identical waveguide grating routers; monolithic integration; optical amplifier integration; semiconductor optical amplifiers; simultaneous control; waveguide grating router; wavelength channels; Control systems; Digital filters; Equalizers; Gratings; Monolithic integrated circuits; Optical filters; Optical waveguides; Semiconductor optical amplifiers; Semiconductor waveguides; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
