Design and experiment of cyclic olefin copolymer based 2.5 THz hollow-core photonic crystal fiber

Chen Qi; Zhu Wenjing; He Xiaoyang; Kong Depeng; Miao Jing; Luo Zhenfei; Zhou Xun; Yang Chun; Zhang Jian; Zhou Chuanming

doi:10.11884/HPLPB201527.083102

Volume 27 Issue 08

Sep. 2015

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Article Navigation > High Power Laser and Particle Beams > 2015 > 27(08): 083102

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Chen Qi, Zhu Wenjing, He Xiaoyang, et al. Design and experiment of cyclic olefin copolymer based 2.5 THz hollow-core photonic crystal fiber[J]. High Power Laser and Particle Beams, 2015, 27: 083102. doi: 10.11884/HPLPB201527.083102

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Design and experiment of cyclic olefin copolymer based 2.5 THz hollow-core photonic crystal fiber

doi: 10.11884/HPLPB201527.083102

1.
Institute of Electronic Engineering,CAEP,Mianyang 621999,China;
2.
Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China;
3.
Research Center of Laser Fusion,CAEP,Chengdu 610041,China;
4.
Terahertz Research Center,CAEP,Mianyang 621999,China

Received Date: 2015-03-06
Rev Recd Date: 2015-06-21
Publish Date: 2015-08-11

Abstract

Abstract

Efficient transmission of terahertz (THz) wave is an important research direction in development of THz technology. Polymeric photonic crystal fiber (PCF) is ideal in THz waveguide transmission because of the advantages of low loss, low dispersion and fine flexibility to bend. Based on the full vector finite element method (FEM), a hollow-core PCF with operating frequency of 2.5 THz is designed. Some samples made of cyclic olefin copolymer (COC) are fabricated. The fiber transmission performance of THz wave is measured by using the CO2 pump laser THz source. The measured minimum loss is 0.17 dB/cm and the average loss is about 0.5 dB/cm. The fluctuation of transmission loss is less than 5% after the fiber is bent 90, showing good flexibility to bend. The measured mode field distribution results of the output port show that the optical fiber transmits signals through the main mode, so the THz energy is well bound in the core of optical fiber.
- terahertz,
- photonic crystal fiber,
- cyclic olefin copolymer,
- hollow-core

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