Liquid crystal-based self-aligning 2 X 2 wavelength routing module
Abbreviated Journal Title
fiber optic switches; liquid crystal devices; electro-optic switches; optical interconnections; optical fiber communications; WAVE-GUIDE GRATINGS; ADD-DROP FILTER; SWITCHING-SPEED; TUNABLE FILTERS; NETWORKS; FIBER; Optics
A novel retroreflective polarization insensitive 2x2 fiber optic switch (FOS) using programmable quarter waveplates (QWPs) is introduced. Key features include low polarization sensitivity and a self-aligning module via a compact retroreflective structure. A proof of concept 2x2 FOS using ferroelectric liquid crystal (FLC)-based (PIPS) Laboratory programmable QWPs is demonstrated, providing a response speed of 394 mus and a low 10.14-mW total electrical power consumption for the and worst case. Multiwavelength switch operation in the 1550-nm wave length region indicates an average optical loss of 6.02 dB with a +/-0.18-dB loss fluctuation, and an optical coherent crosstalk of -21.6 dB with a +/-0.84 dB variation over a 60-nm bandwidth. The temperature dependence of our switch is investigated over a 17 degreesC range, indicating an average 5.80-dB optical loss with a +/-0.13-dB fluctuation, and an average optical coherent crosstalk of -20.5 dB with a fluctuation of +/-0.42 dB. An average polarization dependent loss of 0.4 dB is also measured. A time-multiplexed FLC device addressing technique is introduced for FOS to achieve long duration operation. (C) 2001 Society of Photo-Optical Instrumentation Engineers.
"Liquid crystal-based self-aligning 2 X 2 wavelength routing module" (2001). Faculty Bibliography 2000s. 2968.