Ring-based coil structure photonic crystal fiber for transmission of Orbital Angular Momentum with large bandwidth: Outline, investigation and analysis

2020 ◽  
Vol 473 ◽  
pp. 126003 ◽  
Author(s):  
Md. Farhan Israk ◽  
Md. Abdur Razzak ◽  
Kawsar Ahmed ◽  
Md. Mehedi Hassan ◽  
Md. Anowar Kabir ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
Crystal Fiber ◽  
Large Bandwidth ◽  
Coil Structure

scholarly journals Transmission of Orbital Angular Momentum and Cylindrical Vector Beams in a Large-Bandwidth Annular Core Photonic Crystal Fiber

Fibers ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 22 ◽  
Author(s):  
Manish Sharma ◽  
Fatemeh Amirkhan ◽  
Satyendra K. Mishra ◽  
Dipankar Sengupta ◽  
Younès Messaddeq ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
Tunable Laser ◽  
Quantum Communications ◽  
Crystal Fiber ◽  
Large Bandwidth ◽  
Vector Beams ◽  
Vortex Beams

The stable propagation of orbital angular momentum and cylindrical vector beams in a newly designed annular core photonic crystal fiber (AC-PCF) tailored for the broadband single-radial order beam transmission (within the so-called “endlessly mono-radial” guiding regime) is demonstrated for the first time. It is shown that the vector-vortex beams can maintain high mode purities above 18 dB after propagation in the fiber under test over all of the wavelength range from 805 to 845 nm (over 17 THz bandwidth) investigated with the help of a tunable laser and an S-plate for the generation of singular beams in free space. Our results confirm that the AC-PCF is a promising design for the broadband transmission of vector-vortex beams that have potential applications in space-division multiplexing, quantum communications, optical sensing and trapping.

scholarly journals Ring-Core Photonic Crystal Fiber of Terahertz Orbital Angular Momentum Modes with Excellence Guiding Properties in Optical Fiber Communication

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 122
Author(s):  
Fahad Ahmed Al-Zahrani ◽  
Md. Anowar Kabir
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
High Capacity ◽  
Optical Fiber Communication ◽  
Fused Silica ◽  
Confinement Loss ◽  
Crystal Fiber ◽  
Ring Core

The orbital angular momentum (OAM) of light is used for increasing the optical communication capacity in the mode division multiplexing (MDM) technique. A novel and simple structure of ring-core photonic crystal fiber (RC-PCF) is proposed in this paper. The ring core is doped by the Schott sulfur difluoride material and the cladding region is composed of fused silica with one layer of well-patterned air-holes. The guiding of Terahertz (THz) OAM beams with 58 OAM modes over 0.70 THz (0.20 THz–0.90 THz) frequency is supported by this proposed RC-PCF. The OAM modes are well-separated for their large refractive index difference above 10−4. The dispersion profile of each mode is varied in the range of 0.23–7.77 ps/THz/cm. The ultra-low confinement loss around 10−9 dB/cm and better mode purity up to 0.932 is achieved by this RC-PCF. For these good properties, the proposed fiber is a promising candidate to be applied in the THz OAM transmission systems with high feasibility and high capacity.

A hollow-core circular photonic crystal fiber mode selective coupler for generating orbital angular momentum modes

2021 ◽  
Vol 64 ◽  
pp. 102543
Author(s):  
Jingxuan Yang ◽  
Hu Zhang ◽  
Xiaoguang Zhang ◽  
Ze Chen ◽  
Lixia Xi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
Hollow Core ◽  
Crystal Fiber ◽  
Fiber Mode

Numerical analysis of circular core shaped photonic crystal fiber for orbital angular momentum with efficient transmission

2020 ◽  
Vol 126 (9) ◽  
Author(s):  
Md. Mehedi Hassan ◽  
Md. Anowar Kabir ◽  
Md. Nadim Hossain ◽  
Truong Khang Nguyen ◽  
Bikash Kumar Paul ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Numerical Analysis ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
Crystal Fiber ◽  
Efficient Transmission

High-order orbital angular momentum mode generator based on twisted photonic crystal fiber

2018 ◽  
Vol 43 (8) ◽  
pp. 1786 ◽  
Author(s):  
Cailing Fu ◽  
Shen Liu ◽  
Ying Wang ◽  
Zhiyong Bai ◽  
Jun He ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
High Order ◽  
Crystal Fiber ◽  
Momentum Mode
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