Propagation Delay of Waveguide Photodetector

Author

Li, Yifei ; Wang, Renyuan ; Klamkin, Jonathan ; Madison, Shannon M. ; Juodawlkis, Paul W. ; Herczfeld, Peter ; Bowers, John E.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Massachusetts at Dartmouth, Dartmouth, MA, USA

Volume

28

Issue

15

fYear

2010

Firstpage

2099

Lastpage

2104

Abstract

Optical phase locked loop (OPLL) photonic integrated circuits (PIC) are critical for the high dynamic range phase modulated RF/photonic links. They provide for linear phase demodulation. A challenge for implementing the OPLL PICs is how to reduce the loop propagation delay. In this paper we analyze the delay of a waveguide photodetector, which is a critical component of an OPLL. We also introduce and experimentally validate a counter propagating photodetector device concept. This enables the elimination of the propagation delay due to the finite length of a waveguide photodetector.

Keywords

integrated optics; optical links; optical modulation; optical phase locked loops; optical waveguide components; phase modulation; photodetectors; linear phase demodulation; optical phase locked loop; phase modulated RF-photonic links; photonic integrated circuits; propagation delay; waveguide photodetector; Coherent optical link; optical phased locked loop; propagation delay;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2010.2052349

Filename

5497055