Title :
Polarization insensitive, low-loss, low-crosstalk wavelength multiplexer modules
Author :
Nadler, Christoph K. ; Wildermuth, Eberhard K. ; Lanker, Micheal ; Hunziker, Werner ; Melchior, Hans
Author_Institution :
Inst. for Quantum Electron., Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
A method for compensating polarization sensitivity of arrayed waveguide gratings (AWG´s) based on silica-on-Si waveguide technology using stress release grooves and its realization are described. These stress release grooves compensate fabrication-induced waveguide birefringence without performance degradation. An advanced design for low-loss, low-channel imbalance, and low-crosstalk multiplexer is given and results of the realized modules are presented. The TE/TM passband shift could be reduced from 0.7 nm to below 0.05 nm. Insertion loss of the fully packaged wavelength multiplexer modules is <5 dB and adjacent channel crosstalk is as low as <-40 dB
Keywords :
birefringence; modules; optical communication equipment; optical crosstalk; optical fibre losses; optical fibre polarisation; packaging; sensitivity; silicon-on-insulator; wavelength division multiplexing; 5 dB; SiO2-Si; TE/TM passband shift; adjacent channel crosstalk; advanced design; arrayed waveguide gratings; compensating polarization sensitivity; fabrication-induced waveguide birefringence; fully packaged wavelength multiplexer modules; insertion loss; low-loss low-channel imbalanced low-crosstalk multiplexer; performance degradation; polarization insensitive low-loss low-crosstalk wavelength multiplexer modules; silica-on-Si waveguide technology; stress release grooves; Arrayed waveguide gratings; Birefringence; Degradation; Insertion loss; Multiplexing; Packaging; Passband; Polarization; Stress; Tellurium;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.806898
