Title :
A WDM receiver photonic integrated circuit with net on-chip gain
Author :
Verdiell, J.-M. ; Koch, T.L. ; Miller, B.I. ; Young, M.G. ; Koren, U. ; Storz, F. ; Brown-Goebeler, K.F.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
We demonstrate a photonic circuit with an optical preamplifier, a WDM filter and a fast photodetector integrated on the same chip. The passive integrated filter is formed by an aspheric waveguide lens and a planar Bragg grating. This arrangements yields narrow filter response (8 /spl Aring/ width at -3 dB is demonstrated) and high rejection ratio of 24 dB. The optical preamplifier consisting of strained multi-quantum well layers provides sufficient amplification to overcome the passive losses. Response curves demonstrate net on-chip gain with low ripple.<>
Keywords :
diffraction gratings; integrated optics; integrated optoelectronics; multiplexing equipment; optical filters; optical receivers; optical waveguides; photodetectors; semiconductor quantum wells; wavelength division multiplexing; WDM filter; WDM receiver photonic integrated circuit; aspheric waveguide lens; fast photodetector; high rejection ratio; low ripple; narrow filter response; net on-chip gain; optical preamplifier; passive integrated filter; passive losses; planar Bragg grating; response curves; strained multi-quantum well layers; Integrated optics; Optical filters; Optical planar waveguides; Optical receivers; Optical waveguides; Passive filters; Photodetectors; Photonic integrated circuits; Preamplifiers; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
