Abstract

A novel in-fiber polarizer based on a long-period fiber grating (LPFG) is written by using a focused $\mathrm{C}{\mathrm{O}}_2$ laser beam to notch a photonic crystal fiber periodically. Such a polarizer exhibits a high polarization extinction ratio of more than $20\mathrm{dB}$ over a wide wavelength range of $\sim 11\mathrm{nm}$ near $1550\mathrm{nm}$ and a very low temperature sensitivity of $3.9\mathrm{pm}∕°\mathrm{C}$, which overcomes the disadvantages of the temperature sensitivity of other in-fiber polarizers created on conventional single-mode fiber.

© 2007 Optical Society of America

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