Monolithic eight-wavelength demultiplexed receiver for dense WDM applications

Author

Chandrasekhar ; Zirngibl, M. ; Dentai, A.G. ; Joyner, C.H. ; Storz, F. ; Burrus, C.A. ; Lunardi, L.M.

Author_Institution

Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA

Volume

7

Issue

11

fYear

1995

Firstpage

1342

Lastpage

1344

Abstract

A single chip incorporating a waveguide grating router and eight p-i-n photodetectors followed by eight preamplifiers constructed from heterojunction bipolar transistors, has been realized. The chip can demultiplex eight wavelengths spaced 100 GHz (0.81 nm) apart with nearest neighbor crosstalk better than -15 dB. The external quantum efficiency for each of the eight wavelength demultiplexed photodetectors was 5-8% (a responsivity of 0.06-0.10 A/W) and each optical front end operated up to 2.5 Gb/s. This is the first demonstration of monolithic integration of electronic circuits with a wavelength demultiplexer.<>

Keywords

bipolar integrated circuits; integrated optoelectronics; multiplexing equipment; optical crosstalk; optical receivers; photodetectors; preamplifiers; telecommunication network routing; wavelength division multiplexing; 2.5 Gbit/s; 5 to 8 percent; dense WDM applications; electronic circuits; external quantum efficiency; heterojunction bipolar transistors; monolithic eight-wavelength demultiplexed receiver; monolithic integration; nearest neighbor crosstalk; optical front end; p-i-n photodetectors; preamplifiers; responsivity; single chip; waveguide grating router; wavelength demultiplexed photodetectors; wavelength demultiplexer; Gratings; Heterojunction bipolar transistors; Nearest neighbor searches; Optical crosstalk; Optical receivers; Optical waveguides; PIN photodiodes; Photodetectors; Preamplifiers; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.473492

Filename

473492