In-fiber polarizer based on a long-period fiber grating written on photonic crystal fiber.
A novel in-fiber polarizer based on a long-period fiber grating (LPFG) is written by using a focused CO2 laser beam to notch a photonic crystal fiber periodically. Such a polarizer exhibits a high polarization extinction ratio of more than 20 dB over a wide wavelength range of ~11 nm near 1550 nm and a very low temperature sensitivity of 3.9 pm/ degrees C, which overcomes the disadvantages of the temperature sensitivity of other in-fiber polarizers created on conventional single-mode fiber.
Wang
Yiping
Y
Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China. ypwang@china.com
Xiao
Limin
L
Wang
D N
DN
Jin
Wei
W