19 February 2018 Broad bandwidth and 600 μm length photonic crystal fiber polarization filter at the communication window of 1.55 μm
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Abstract
A broad bandwidth and 600-μm length photonic crystal fiber polarization filter at the communication window of 1.55  μm is proposed. The physical parameters are analyzed by the finite element method. In the structure, the loss is 705.81  dB/cm for y-polarized mode and 24.06  dB/cm for x-polarized mode at the wavelength of 1.55  μm; the y-polarized mode will be filtered out because of this property. The bandwidth of an extinction ratio (ER) better than −20  dB is 65 nm when the filter length is 600  μm, and the ER is −41  dB at the communication wavelength of 1.55  μm. The filter structure is simple and easy to produce, and it can be used to produce a single-polarization filter.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Zhen Zhang, Zhen Zhang, Shu-guang Li, Shu-guang Li, Qiang Liu, Qiang Liu, Shuhuan Zhang, Shuhuan Zhang, Yujun Wang, Yujun Wang, Junjun Wu, Junjun Wu, } "Broad bandwidth and 600 μm length photonic crystal fiber polarization filter at the communication window of 1.55 μm," Optical Engineering 57(2), 027105 (19 February 2018). https://doi.org/10.1117/1.OE.57.2.027105 . Submission: Received: 4 September 2017; Accepted: 3 January 2018
Received: 4 September 2017; Accepted: 3 January 2018; Published: 19 February 2018
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