Electrically Tuning Characteristics of LC Selectively Infiltrated PCF Sagnac Interferometer

Pingsheng Xue; Qiang Liu; Zhaoxia Wu; Qiang Wu; Chenyu Zhao; Wai Pang Ng; Richard Fu; Richard Binns

doi:10.1109/LPT.2021.3086482

Electrically Tuning Characteristics of LC Selectively Infiltrated PCF Sagnac Interferometer

Pingsheng Xue, Qiang Liu^*, Zhaoxia Wu, Qiang Wu, Chenyu Zhao, Wai Pang Ng, Richard Fu, Richard Binns

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

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Abstract

A photonic crystal fiber was selectively infiltrated only two of the air holes near the core with liquid crystal. The selective infiltration caused geometric asymmetry and created high birefringence. Because of the geometric asymmetry, the response to varying electric field is concerned with electric field direction. A Sagnac interferometer was set to investigate the electric tuning characteristics of the selectively infiltrated photonic crystal fiber. The effective refractive-indices of the fiber varies with electric field due to reorientation of liquid crystal molecules. The highest sensitivity was 1.12 nm/V (504 nm/kV/mm) with tuning range of 7 nm when electric field direction was parallel to the connecting line of infiltrated holes. The response time of the selectively infiltrated photonic crystal fiber was studied. The device can be utilized as voltage sensors, electro-optical modulators and filters.

Original language	English
Pages (from-to)	668-671
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	33
Issue number	13
Early online date	4 Jun 2021
DOIs	https://doi.org/10.1109/LPT.2021.3086482
Publication status	Published - 1 Jul 2021

Keywords

Electric field sensing
Indexes
Interference
Liquid crystal
Modulators
Photonic crystal fiber
Refractive index
Sagnac interferometer
Sagnac interferometers
Sensitivity
Tuning
Voltage fluctuations

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title = "Electrically Tuning Characteristics of LC Selectively Infiltrated PCF Sagnac Interferometer",

abstract = "A photonic crystal fiber was selectively infiltrated only two of the air holes near the core with liquid crystal. The selective infiltration caused geometric asymmetry and created high birefringence. Because of the geometric asymmetry, the response to varying electric field is concerned with electric field direction. A Sagnac interferometer was set to investigate the electric tuning characteristics of the selectively infiltrated photonic crystal fiber. The effective refractive-indices of the fiber varies with electric field due to reorientation of liquid crystal molecules. The highest sensitivity was 1.12 nm/V (504 nm/kV/mm) with tuning range of 7 nm when electric field direction was parallel to the connecting line of infiltrated holes. The response time of the selectively infiltrated photonic crystal fiber was studied. The device can be utilized as voltage sensors, electro-optical modulators and filters.",

keywords = "Electric field sensing, Indexes, Interference, Liquid crystal, Modulators, Photonic crystal fiber, Refractive index, Sagnac interferometer, Sagnac interferometers, Sensitivity, Tuning, Voltage fluctuations",

author = "Pingsheng Xue and Qiang Liu and Zhaoxia Wu and Qiang Wu and Chenyu Zhao and Ng, \{Wai Pang\} and Richard Fu and Richard Binns",

note = "Funding information: This work was supported in part by the National Natural Science Foundation of China under Grant 51907017, in part by the Key Science and Technology Research Projects of Higher Education Institutions in Hebei Province of China under Grant ZD2019304, in part by the Hebei Natural Science Foundation under Grant F2020501040, and in part by the Fundamental Research Funds for the Central Universities of China under Grant N2123012.",

year = "2021",

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doi = "10.1109/LPT.2021.3086482",

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pages = "668--671",

journal = "IEEE Photonics Technology Letters",

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T1 - Electrically Tuning Characteristics of LC Selectively Infiltrated PCF Sagnac Interferometer

AU - Xue, Pingsheng

AU - Liu, Qiang

AU - Wu, Zhaoxia

AU - Wu, Qiang

AU - Zhao, Chenyu

AU - Ng, Wai Pang

AU - Fu, Richard

AU - Binns, Richard

N1 - Funding information: This work was supported in part by the National Natural Science Foundation of China under Grant 51907017, in part by the Key Science and Technology Research Projects of Higher Education Institutions in Hebei Province of China under Grant ZD2019304, in part by the Hebei Natural Science Foundation under Grant F2020501040, and in part by the Fundamental Research Funds for the Central Universities of China under Grant N2123012.

PY - 2021/7/1

Y1 - 2021/7/1

N2 - A photonic crystal fiber was selectively infiltrated only two of the air holes near the core with liquid crystal. The selective infiltration caused geometric asymmetry and created high birefringence. Because of the geometric asymmetry, the response to varying electric field is concerned with electric field direction. A Sagnac interferometer was set to investigate the electric tuning characteristics of the selectively infiltrated photonic crystal fiber. The effective refractive-indices of the fiber varies with electric field due to reorientation of liquid crystal molecules. The highest sensitivity was 1.12 nm/V (504 nm/kV/mm) with tuning range of 7 nm when electric field direction was parallel to the connecting line of infiltrated holes. The response time of the selectively infiltrated photonic crystal fiber was studied. The device can be utilized as voltage sensors, electro-optical modulators and filters.

AB - A photonic crystal fiber was selectively infiltrated only two of the air holes near the core with liquid crystal. The selective infiltration caused geometric asymmetry and created high birefringence. Because of the geometric asymmetry, the response to varying electric field is concerned with electric field direction. A Sagnac interferometer was set to investigate the electric tuning characteristics of the selectively infiltrated photonic crystal fiber. The effective refractive-indices of the fiber varies with electric field due to reorientation of liquid crystal molecules. The highest sensitivity was 1.12 nm/V (504 nm/kV/mm) with tuning range of 7 nm when electric field direction was parallel to the connecting line of infiltrated holes. The response time of the selectively infiltrated photonic crystal fiber was studied. The device can be utilized as voltage sensors, electro-optical modulators and filters.

KW - Electric field sensing

KW - Indexes

KW - Interference

KW - Liquid crystal

KW - Modulators

KW - Photonic crystal fiber

KW - Refractive index

KW - Sagnac interferometer

KW - Sagnac interferometers

KW - Sensitivity

KW - Tuning

KW - Voltage fluctuations

UR - https://www.scopus.com/pages/publications/85107341134

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DO - 10.1109/LPT.2021.3086482

M3 - Article

AN - SCOPUS:85107341134

SN - 1041-1135

VL - 33

SP - 668

EP - 671

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 13

ER -

Electrically Tuning Characteristics of LC Selectively Infiltrated PCF Sagnac Interferometer

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