Voltage-controllable wavelength-selective optical switching based on multiply cascaded long-period fiber gratings.
A novel wavelength-selective optical switching device based on multiply cascaded long-period fiber gratings is proposed and experimentally demonstrated. The on and off states of each channel in the optical switching device can be effectively switched by voltage-controllable coil heaters. The device has advantages of multichannel operation, multiwavelength selectivity, and bandwidth controllability. It can be useful for applications in multiwavelength operational signal gating, optical switching devices, routers, and multiplexers in optical communication systems.
Han
Young-Geun
YG
Photonics Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Korea. yyghan@kist.re.kr
Choi
Sun-Min
SM
Kim
Sang Hyuck
SH
Lee
Sang Bae
SB