Influence of structural parameters on the performance of gold-coated photonic crystal fiber polarization filter

Xin Yan; Guoqing Fan

doi:10.1117/1.OE.57.11.117114

30 November 2018 Influence of structural parameters on the performance of gold-coated photonic crystal fiber polarization filter

Xin Yan, Guoqing Fan

Author Affiliations +

Optical Engineering, Vol. 57, Issue 11, 117114 (November 2018). https://doi.org/10.1117/1.OE.57.11.117114

Abstract

We propose a gold-coated photonic crystal fiber (PCF) polarization filter and study the influencing parameters from a structural viewpoint. In this structure, small air holes and elliptical air holes near the core are used to increase the birefringence, and we have chosen two air holes with large diameter to coat with the metal Au. The designed filter showed a loss of 403.76 dB / cm in the y-polarization direction at the wavelength of 1.38 μm. However, the loss in the x-polarization direction was negligible, and can be selectively filtered out. Hence, light in a certain polarization direction achieves the effect of communication band filtering. We have used the finite-element method to simulate and analyze the influence of the structural parameter on fiber filter performance. The results reveal that the thickness of the metal layer, the diameter of the coated metal hole, and the asymmetry around the gold-coated hole significantly influence the position and coupling strength of the resonant response point between the surface plasmon and the core mode. In summary, the design parameters need to be optimized for maximum filtering performance of PCF. The present study opens up avenues for further research in communication band fiber filters.

Citation Download Citation

Xin Yan and Guoqing Fan "Influence of structural parameters on the performance of gold-coated photonic crystal fiber polarization filter," Optical Engineering 57(11), 117114 (30 November 2018). https://doi.org/10.1117/1.OE.57.11.117114

Received: 19 September 2018; Accepted: 2 November 2018; Published: 30 November 2018

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available