Title :
Polarization-Insensitive Operation of Lithium Niobate Mach–Zehnder Interferometer With Silica PLC-Based Polarization Diversity Circuit
Author :
Suzuki, Kenya ; Yamada, Takashi ; Moriwaki, Osamu ; Takahashi, Hiroshi ; Okuno, Masayuki
Author_Institution :
NTT Corp., Atsugi
fDate :
5/15/2008 12:00:00 AM
Abstract :
We demonstrate the polarization-insensitive operation of a Mach-Zehnder interferometer (MZI)-based lithium niobate switch with a silica waveguide polarization beam splitter. The splitter is composed of an MZI with a half wave plate installed in one arm, and exhibits a polarization extinction ratio of more than 15 dB. The switch functions for both polarizations with an extinction ratio of more than 20 dB, a polarization-dependent loss of 0.1 dB and a switching speed of 40 ps.
Keywords :
Mach-Zehnder interferometers; integrated optics; lithium compounds; optical beam splitters; silicon compounds; LiNbO3; Mach-Zehnder interferometer; SiO2; integrated optics; optical switch; phase shifter; planar lightwave circuit; polarization diversity circuit; polarization insensitive operation; waveguide polarization beam splitter; Circuits; Interferometric lithography; Lithium niobate; Optical fiber networks; Optical polarization; Optical switches; Phase shifters; Phased arrays; Programmable control; Silicon compounds; Integrated optics; lithium niobate (LN) phase shifter; optical switch; polarization beam splitter; silica-based planar lightwave circuit (PLC);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.921109
