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Article

Tunable Mode Converter Device Based on Photonic Crystal Fiber with a Thermo-Responsive Liquid Crystal Core

1
Department of Electronic and Telecommunications Engineering, Instituto Tecnológico Metropolitano, Medellin A. A 050013, Colombia
2
Escuela de Física, Universidad Nacional de Colombia—Sede Medellín, Medellín A.A. 3840, Colombia
*
Author to whom correspondence should be addressed.
Photonics 2020, 7(1), 3; https://doi.org/10.3390/photonics7010003
Received: 13 November 2019 / Revised: 10 December 2019 / Accepted: 12 December 2019 / Published: 19 December 2019
(This article belongs to the Section Optical Communication and Network)
A compact tunable mode converter device based on the thermo-optically characteristics of liquid crystals (LCs) is proposed and numerically analyzed herein. The proposed mode converter consists of an asymmetric dual-core photonic crystal fiber (PCF) with a highly thermo-responsive LC core. The verification of the proposed mode converter was ensured through an accurate PCF analysis based on the vector finite element method. With an appropriate choice of the design parameters associated with the LC core, phase matching at a single wavelength is available in the important O-band wavelength region. The simulation results showed that high conversion efficiencies between LP01 and LP11 mode are readily achieved over a broad wavelength range from 1278 nm to 1317 nm. Likewise, the tunable capability of the proposed mode converter was evaluated when it was submitted to thermal changes; thus, we evidence the strong thermo-responsive dependence of the operating wavelength, mode conversion efficiency and full-width at the half maximum (FWHM) bandwidth. Finally, the fabrication tolerances of the devices were also investigated. Therefore, the thermo-responsive characteristics of this novel PCF mode converter can be of fundamental importance in the future space division multiplexing technology. View Full-Text
Keywords: mode-division multiplexing; mode converter; photonic crystal fiber; tunable photonic device; liquid crystal; microstructured optical fiber mode-division multiplexing; mode converter; photonic crystal fiber; tunable photonic device; liquid crystal; microstructured optical fiber
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MDPI and ACS Style

Montoya Cardona, J.A.; Gomez Cardona, N.D.; Gonzalez Valencia, E.; Torres Trujillo, P.; Reyes Vera, E. Tunable Mode Converter Device Based on Photonic Crystal Fiber with a Thermo-Responsive Liquid Crystal Core. Photonics 2020, 7, 3. https://doi.org/10.3390/photonics7010003

AMA Style

Montoya Cardona JA, Gomez Cardona ND, Gonzalez Valencia E, Torres Trujillo P, Reyes Vera E. Tunable Mode Converter Device Based on Photonic Crystal Fiber with a Thermo-Responsive Liquid Crystal Core. Photonics. 2020; 7(1):3. https://doi.org/10.3390/photonics7010003

Chicago/Turabian Style

Montoya Cardona, Jorge A., Nelson D. Gomez Cardona, Esteban Gonzalez Valencia, Pedro Torres Trujillo, and Erick Reyes Vera. 2020. "Tunable Mode Converter Device Based on Photonic Crystal Fiber with a Thermo-Responsive Liquid Crystal Core" Photonics 7, no. 1: 3. https://doi.org/10.3390/photonics7010003

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