scholarly journals A novel approach for designing photonic crystal fiber splitters with polarization-independent propagation characteristics

2005 ◽  
Vol 13 (19) ◽  
pp. 7365 ◽  
Author(s):  
Nikolaos Florous ◽  
Kunimasa Saitoh ◽  
Masanori Koshiba
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Propagation Characteristics ◽  
Crystal Fiber ◽  
Novel Approach ◽  
Polarization Independent

A Novel Approach for Spectroscopic Chemical Identification Using Photonic Crystal Fiber in the Terahertz Regime

2018 ◽  
Vol 18 (2) ◽  
pp. 575-582 ◽  
Author(s):  
Md. Saiful Islam ◽  
Jakeya Sultana ◽  
Kawsar Ahmed ◽  
Mohammad Rakibul Islam ◽  
Alex Dinovitser ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Identification ◽  
Crystal Fiber ◽  
Novel Approach

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.

Polarization-independent bistable light valve in blue phase liquid crystal filled photonic crystal fiber

2013 ◽  
Vol 52 (20) ◽  
pp. 4849 ◽  
Author(s):  
Chun-Hong Lee ◽  
Chih-Wei Wu ◽  
Chun-Wei Chen ◽  
Hung-Chang Jau ◽  
Tsung-Hsien Lin
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Crystal Fiber ◽  
Phase Liquid ◽  
Blue Phase ◽  
Light Valve ◽  
Polarization Independent

Propagation Characteristics of Terahertz Wave Double-cladding Photonic Crystal Fiber

2016 ◽  
Vol 37 (7) ◽  
pp. 845-851
Author(s):  
胡守重 HU Shou-zhong ◽  
侯尚林 HOU Shang-lin ◽  
刘延君 LIU Yan-jun ◽  
王道斌 WANG Dao-bin ◽  
雷景丽 LEI Jing-li
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Terahertz Wave ◽  
Propagation Characteristics ◽  
Crystal Fiber

scholarly journals A New Approach for Representing Photonic Crystal Fiber Index Profile to Determine their Optical Characteristics

2011 ◽  
Vol 7 (1) ◽  
pp. 73-77
Author(s):  
Maan Shaker ◽  
Mahmood Majeed ◽  
Raid Daoud
Keyword(s):  
Genetic Algorithm ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Special Structure ◽  
Dispersion Characteristics ◽  
Index Profile ◽  
New Approach ◽  
Crystal Fiber ◽  
Novel Approach ◽  
Different Shapes

A genetic algorithm is implemented to represent the different shapes of Photonic Crystal Fiber (PCF) profile; this is due to the fact that such fibers have special structure. A novel approach is suggested which differs from the usual fibers. By applying this new approach, more realistic representations of their profiles are drawn and hence highly accurate results are obtained including propagation and dispersion characteristics.

scholarly journals Characterization of Fluoropolymer Photonic Crystal Fiber for THz Regime

2014 ◽  
Vol 1 (2) ◽  
pp. 65-69
Author(s):  
Jiten Boruah ◽  
Bhawana Dabas ◽  
Monika Rajput ◽  
R. K. Sinha
Keyword(s):  
Finite Element Method ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Hexagonal Lattice ◽  
Effective Index ◽  
Propagation Characteristics ◽  
Crystal Fiber ◽  
Terahertz Region ◽  
Guided Mode

In this paper, we present the propagation characteristics of Fluoropolymer based Photonic Crystal Fiber (PCF) exhibiting guiding properties in terahertz region. The variation of effective index of guided mode and dispersion with wavelength in hexagonal lattice Fluoropolymer PCF are investigated by using the fully-vectorial finite element method (FEM).

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