Design of broadband single-polarization filter based on simple structure photonic crystal fiber with gold-coated air holes

A polarization filter based on simple structure photonic crystal fiber (PCF) coated with gold air holes is designed in this work. The full vector finite element method (FEM) is used to calculate the characteristic parameters of PCF. In the final numerical simulation results, the loss peak in the [Formula: see text] polarization direction is 2305.72 dB/cm and the [Formula: see text]-polarized loss is as low as 75.86 dB/cm at 1.31 [Formula: see text]m. For the fiber length of 1000 [Formula: see text]m, the CT reaches 1936.83 dB and a wide bandwidth greater than 20 dB can provide above 800 nm. The content of this paper can provide a new idea for filter structure design.

Download Full-text

A Single-Polarization Single-Mode Photonic Crystal Fiber with Four Lines of Small Elliptical Air-Holes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.301-303.50 ◽

2011 ◽

Vol 301-303 ◽

pp. 50-54

Author(s):

Hong Jun Zheng ◽

Chong Qing Wu ◽

Zhi Wang ◽

Jian Wang ◽

Shan Liang Liu ◽

...

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Single Mode ◽

Confinement Loss ◽

Crystal Fiber ◽

Vector Finite Element Method ◽

Vector Finite Element ◽

Perfect Matched Layer ◽

Single Polarization ◽

Full Vector

We present a novel single-polarization single-mode photonic crystal fiber (SPSM-PCF) design with four lines of small elliptical air-holes in order to obtain wider bandwidth for SPSM operation. The characteristics of the proposed SPSM-PCF are studied by using a full-vector finite element method (FEM) with perfect matched layer (PML) boundary conditions. At the wavelength of 1.55 µm, the confinement loss of the x-polarized mode is lower than 0.5 dB/km, whereas the loss of the y-polarized mode is larger than 50 dB/km. Compared with the case of x-polarized mode, the y-polarized mode can be suppressed in the PCF. Then, the SPSM operation is obtained. The proposed PCF can perform SPSM operation with broadband of 600 nm for considering the confinement loss ratio and the loss difference.

Download Full-text

A Novel Photonic Crystal Fiber with Two Rings of Hybrid Elliptical Air-Holes for Single-Polarization Single-Mode Operation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.301-303.45 ◽

2011 ◽

Vol 301-303 ◽

pp. 45-49

Author(s):

Hong Jun Zheng ◽

Chong Qing Wu ◽

Jian Wang ◽

Zhi Wang ◽

Shan Liang Liu ◽

...

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Single Mode ◽

Confinement Loss ◽

Modal Birefringence ◽

Crystal Fiber ◽

Mode Field ◽

Vector Finite Element Method ◽

Vector Finite Element ◽

Single Polarization

A novel photonic crystal fiber (PCF) design with two rings of hybrid elliptical air-holes for single-polarization single-mode (SPSM) operation is presented. The proposed SPSM-PCF characteristics are investigated by using a full-vector finite element method (FEM) with perfect matched layer (PML) boundary conditions. The proposed SPSM-PCF can perform a single-polarization single-mode propagation. The modal birefringence of the proposed SPSM-PCF is as high as 0.00284 at the wavelength of 1.55 µm, the beat length is 0.546 mm. The confinement loss of the x-polarized mode is lower than 0.5 dB/km, whereas the loss of the y-polarized one is larger than 15 dB/km. Compared with the case of x-polarized mode, the y-polarized mode can be suppressed with a shorter fiber length. Variations of the mode field characteristics with input wavelength are given. For considering loss ratio and loss difference, the proposed PCF can perform SPSM operation with wide bandwidth of 600 nm. It indicates that this is a good solution to realize single-mode single-polarization operation.

Download Full-text

Surface plasmon induced broadband single-polarization filter based on high birefringence photonic crystal fiber

Optik ◽

10.1016/j.ijleo.2020.164255 ◽

2020 ◽

Vol 206 ◽

pp. 164255

Author(s):

Yujun Wang ◽

JianPing Shen ◽

jianshe Li ◽

Shuguang Li

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Surface Plasmon ◽

Polarization Filter ◽

High Birefringence ◽

Crystal Fiber ◽

Single Polarization

Download Full-text

An Ultra-broadband Single Polarization Filter Based on Plasmonic Photonic Crystal Fiber with a Liquid Crystal Core

Plasmonics ◽

10.1007/s11468-016-0279-1 ◽

2016 ◽

Vol 12 (2) ◽

pp. 411-417 ◽

Cited By ~ 8

Author(s):

Linghong Jiang ◽

Yi Zheng ◽

Jianju Yang ◽

Lantian Hou ◽

Zuohan Li ◽

...

Keyword(s):

Liquid Crystal ◽

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Polarization Filter ◽

Crystal Fiber ◽

Crystal Core ◽

Single Polarization

Download Full-text

Single-polarization filter based on photonic crystal fiber with nanoscale gold-coated and liquid-filled air holes

Optik ◽

10.1016/j.ijleo.2020.165431 ◽

2020 ◽

Vol 222 ◽

pp. 165431

Author(s):

Yujun Wang ◽

Shuguang Li ◽

Jianshe Li ◽

Mingyue Wang ◽

Pengtao Yu

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Polarization Filter ◽

Crystal Fiber ◽

Single Polarization

Download Full-text

Characteristics of Ultrasensitive Hexagonal-Cored Photonic Crystal Fiber for Hazardous Chemical Sensing

Photonics ◽

10.3390/photonics9010038 ◽

2022 ◽

Vol 9 (1) ◽

pp. 38

Author(s):

Abdul Mu’iz Maidi ◽

Norazanita Shamsuddin ◽

Wei-Ru Wong ◽

Shubi Kaijage ◽

Feroza Begum

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Chemical Sensing ◽

Chromatic Dispersion ◽

Relative Sensitivity ◽

Crystal Fiber ◽

Hazardous Chemical ◽

Sensing Applications ◽

Vector Finite Element Method ◽

Vector Finite Element

A highly sensitive non-complex cored photonic crystal fiber sensor for hazardous chemical sensing with water, ethanol, and benzene analytes has been proposed and is numerically analyzed using a full-vector finite element method. The proposed fiber consists of a hexagonal core hole and two cladding air hole rings, operating in the lower operating wavelength of 0.8 to 2.6 µm. It has been shown that the structure has high relative sensitivity of 94.47% for water, 96.32% for ethanol and 99.63% for benzene, and low confinement losses of 7.31 × 10−9 dB/m for water, 3.70 × 10−10 dB/m ethanol and 1.76 × 10−13 dB/m benzene. It also displays a high power fraction and almost flattened chromatic dispersion. The results demonstrate the applicability of the proposed fiber design for chemical sensing applications.

Download Full-text

Efficient photonic crystal fiber polarization splitters composed of gallium arsenide and nematic liquid crystals

Modern Physics Letters B ◽

10.1142/s0217984921500779 ◽

2020 ◽

pp. 2150077

Author(s):

Yifeng Ding ◽

Chao Liu ◽

Lin Yang ◽

Jingwei Lv ◽

Guanglai Fu ◽

...

Keyword(s):

Gallium Arsenide ◽

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Fiber Length ◽

Structural Parameters ◽

Extinction Ratio ◽

Crystal Fiber ◽

Vector Finite Element Method ◽

Vector Finite Element ◽

Biochemical Detection

Two photonic crystal fiber (PCF) polarization beam splitters (PBSs) featuring ultra-short length and ultra-high extinction ratios at wavelengths of 1.31 [Formula: see text]m and 1.55 [Formula: see text]m are designed and investigated. Non-silicon materials, such as gallium arsenide (GaAs) and nematic liquid crystal (NLC), are incorporated into the structure to ensure operation of the splitters in the communication bandwidth. Based on the full-vector finite element method (FEM), numerical simulation is carried out to optimize the structural parameters systematically. Specifically, for the splitter operating at 1.31 [Formula: see text]m, the optimal optical fiber length, extinction ratio, and bandwidth are 27.87234 [Formula: see text]m, [Formula: see text] dB, and 152 nm, respectively. In comparison, the optimal fiber length, extinction ratio, and bandwidth of the splitter at the wavelength of 1.55 [Formula: see text]m are 15.59356 [Formula: see text]m, [Formula: see text] dB, and 200 nm, respectively. The results reveal that the splitters have great potential in environmental monitoring, biochemical detection, and optical communication.

Download Full-text

A Novel High-Birefringent Photonic Crystal Fiber and its Polarization Maintaining Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.760-762.185 ◽

2013 ◽

Vol 760-762 ◽

pp. 185-189

Author(s):

Jian Hui Zeng ◽

Xu You Li ◽

Wen Bin Hu

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Theoretical Method ◽

High Birefringence ◽

Crystal Fiber ◽

Vector Finite Element Method ◽

Vector Finite Element ◽

Polarization Maintaining ◽

Modal Field ◽

Full Vector

A novel high-birefringent photonic crystal fiber (PCF) was proposed and analyzed by full-vector finite element method (FEM). The modal field and birefringence properties were investigated. All of air holes in proposed PCF are round, and their diameters are the same. It is greatly reduce the difficulty of fabrication. According to the results of numerical analysis, it can be observed that the mode birefringence of this novel PCF can be easily achieve the order of 10-3at 1.55μm. This research provides effective theoretical method for the fabrication, development and construction of high-birefringence photonic crystal fiber.

Download Full-text