25 January 2018 High-birefringence photonic crystal fiber polarization filter with gold-coated and liquid-filled air holes based on surface plasmon resonance
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Abstract
A high-birefringence photonic crystal fiber polarization filter is proposed. The coupling theory is used to explain full and incomplete couplings. The resonance point can be adjusted to the communication band by optimizing the fiber structure parameters. Numerical simulation results indicate that the resonance strength can reach 924.96 and 710.28    dB . cm 1 at the communication wavelength of 1.31 and 1.55    μ m in x - and y -polarized directions, respectively. By filling liquid analyte, the confinement loss can reach 804.52    dB . cm 1 at the wavelength of 1.55    μ m . Furthermore, when the fiber length of L equals 500    μ m , the peak value of the cross talk (CT) can reach 389.15 and 280.52    dB , respectively. When the length of the fiber L equals 200    μ m , the bandwidth of the CT better than 20 dB is up to 120 nm at the wavelength of 1.31  μm, and the bandwidth of the
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Junbo Lou, Shuguang Li, Tonglei Cheng, Xin Yan, Xuenan Zhang, "High-birefringence photonic crystal fiber polarization filter with gold-coated and liquid-filled air holes based on surface plasmon resonance," Optical Engineering 57(1), 016109 (25 January 2018). https://doi.org/10.1117/1.OE.57.1.016109 . Submission: Received: 8 September 2017; Accepted: 5 December 2017
Received: 8 September 2017; Accepted: 5 December 2017; Published: 25 January 2018
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