Title :
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
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2010.2052349
