Full-vector model for analyzing single-polarization single-mode photonic crystal fiber

2005 ◽  
Author(s):  
Shuqin Lou ◽  
Zhi Wang ◽  
Guobin Ren ◽  
Shuisheng Jian
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Vector Model ◽  
Crystal Fiber ◽  
Single Polarization ◽  
Full Vector

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

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.

A photonic crystal fiber for single-polarization single-mode operation

2011 ◽  
Author(s):  
Hongjun Zheng ◽  
Chongqing Wu ◽  
Zhi Wang ◽  
Shanliang Liu ◽  
Huishan Yu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Single Mode Operation ◽  
Crystal Fiber ◽  
Mode Operation ◽  
Single Polarization

Design of single mode single polarization large mode area photonic crystal fiber

2015 ◽  
Author(s):  
Kishor D. Naik ◽  
Than Singh Saini ◽  
Ajeet Kumar ◽  
Ravindra K. Sinha
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Large Mode Area ◽  
Crystal Fiber ◽  
Single Polarization ◽  
Mode Area

scholarly journals A Terahertz (THz) Single-Polarization-Single-Mode (SPSM) Photonic Crystal Fiber (PCF)

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2442 ◽  
Author(s):  
Tianyu Yang ◽  
Can Ding ◽  
Richard W. Ziolkowski ◽  
Y. Jay Guo
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Propagation Distance ◽  
Wide Frequency Range ◽  
Crystal Fiber ◽  
Novel Approach ◽  
Gain Material ◽  
Single Polarization ◽  
Different Diameters

This paper presents a novel approach to attain a single-polarization-single-mode (SPSM) photonic crystal fiber (PCF) in the terahertz (THz) regime. An initial circular hole PCF design is modified by introducing asymmetry in the first ring of six air holes in the cladding, i.e., epsilon-near-zero (ENZ) material is introduced into only four of those air holes and the other two remain air-filled but have different diameters. The resulting fundamental X-polarized (XP) and Y-polarized (YP) modes have distinctly different electric field distributions. The asymmetry is arranged so that the YP mode has a much larger amount of the field distributed in the ENZ material than the XP mode. Since the ENZ material is very lossy, the YP mode suffers a much higher loss than the XP mode. Consequently, after a short propagation distance, the loss difference (LD) between the XP and YP modes will be large enough that only the XP mode still realistically exists in the PCF. To further enhance the outcome, gain material is introduced into the core area to increase the LDs between the wanted XP mode and any unwanted higher order (HO) modes, as well as to compensate for the XP mode loss without affecting the LD between the XP and YP modes. The optimized PCF exhibits LDs between the desired XP mode and all other modes greater than 8.0 dB/cm across a wide frequency range of 0.312 THz. Consequently, the reported PCF only needs a length of 2.5 cm to attain an SPSM result, with the unwanted modes being more than 20 dB smaller than the wanted mode over the entire operational band.

A novel single-polarization single-mode photonic crystal fiber

2006 ◽  
Author(s):  
Fangdi Zhang ◽  
Xiaoyi Liu ◽  
Zhiguo Zhang ◽  
Min Zhang ◽  
Peida Ye
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Crystal Fiber ◽  
Single Polarization
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