Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 20, Issue 9-12, Pages 773-775Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2008.921109
Keywords
integrated optics; lithium niobate (LN) phase shifter; optical switch; polarization beam splitter; silica-based planar lightwave circuit (PLC)
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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.
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