Title :
High-Speed Optical 1 × 4 Switch Based on Generalized Mach–Zehnder Interferometer With Hybrid Configuration of Silica-Based PLC and Lithium Niobate Phase-Shifter Array
Author :
Suzuki, Kenya ; Yamada, Takashi ; Ishii, Motohaya ; Shibata, Tomohiro ; Mino, Shinji
Author_Institution :
NTT Photonics Labs., NTT Corp. Atsugi, Kanagawa-Prefecture
fDate :
5/1/2007 12:00:00 AM
Abstract :
We demonstrate a high-speed optical switch based on a generalized Mach-Zehnder interferometer with a hybrid configuration consisting of a silica-based planar lightwave circuit and lithium niobate phase shifters. The novel switch demonstrated here has one input and four output ports and a switching time of less than 0.1 mus, thanks to the fast response of the electrooptic phase shifters on the LN chip. The insertion loss and extinction ratio of the switch are 4.2 dB and more than 17 dB, respectively
Keywords :
Mach-Zehnder interferometers; electro-optical devices; high-speed optical techniques; integrated optics; lithium compounds; optical arrays; optical losses; optical phase shifters; optical switches; silicon compounds; 4.2 dB; LiNbO3; SiO2; electrooptic phase shifter; extinction ratio; generalized Mach-Zehnder interferometer; high-speed optical switch; hybrid switch configuration; insertion loss; lithium niobate phase-shifter array; silica-based photonic lightwave circuit; High speed optical techniques; Interferometric lithography; Lithium niobate; Optical arrays; Optical interferometry; Optical switches; Phase shifters; Phase shifting interferometry; Phased arrays; Programmable control; Integrated optics; lithium niobate (LN) phase shifter; optical switch; silica-based planar lightwave circuit (PLC);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.894984
