Chinese Optics Letters, 2010, 8 (10): 983, Published Online: Oct. 19, 2010
Equal channel spacing Sagnac filter using high-birefringent photonic crystal fibers Download: 553次
Sagnac滤波器 信道间隔 光子晶体光纤 060.2330 Fiber optics communications 060.2340 Fiber optics components 060.2420 Fibers, polarization-maintaining 230.7408 Wavelength filtering devices
Abstract
An equal channel spacing Sagnac filter is proposed using a high-birefringent photonic crystal fiber (PCF) with birefringence square to the operation wavelength. A PCF with four smaller central air holes surrounded by larger air holes is applied in a Sagnac filter with optimized parameters to achieve equal channel spacing of 0.8 nm. Given that the birefringence of this PCF is square to the operation wavelength, the channel spacing of the proposed filter changes by only 0.03 nm within a wavelength range from 1400 to 1650 nm; this is about one order of magnitude less than that constructed with conventional high-birefringent fibers.
Xiurong Ma, Ying Zhu. Equal channel spacing Sagnac filter using high-birefringent photonic crystal fibers[J]. Chinese Optics Letters, 2010, 8(10): 983.