Compact Integrated Polarization-Insensitive Two-Channel Receiver on Silicon

Author

Chen, Long ; Buhl, Larry ; Doerr, Christopher R. ; Chen, Young-Kai

Author_Institution

Bell Labs., Alcatel-Lucent, Holmdel, NJ, USA

Volume

23

Issue

15

fYear

2011

Firstpage

1073

Lastpage

1075

Abstract

We describe a polarization-insensitive two-channel receiver which utilizes a novel Mach-Zehnder interferometer on a high-index-contrast waveguide platform and integrated germanium photodetectors for access application. A fiber-to-detector polarization-dependent loss of less than 0.8 dB is demonstrated over a wide wavelength range. By packaging the receiver chip with transimpedance amplifiers, we measured sensitivities of -23.3 and -22.6 dBm for the two channels at 2.5 Gb/s and demonstrated polarization-insensitive operations.

Keywords

Mach-Zehnder interferometers; elemental semiconductors; germanium; integrated optoelectronics; operational amplifiers; optical fibre losses; optical fibre polarisation; optical receivers; photodetectors; silicon; Ge; Mach-Zehnder interferometer; Si; access application; bit rate 2.5 Gbit/s; compact integrated polarization-insensitive two-channel receiver; fiber-to-detector polarization-dependent loss; high index contrast waveguide; integrated photodetectors; polarization-insensitive operations; receiver chip; transimpedance amplifiers; Couplings; Directional couplers; Optical interferometry; Optical polarization; Optical receivers; Optical waveguides; Integrated photonic circuits; optical receivers; silicon photonics; wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2154381

Filename

5766710