scholarly journals Arbitrary polarization and orbital angular momentum generation based on spontaneously broken degeneracy in helically twisted ring-core photonic crystal fibers

2021 ◽  
Vol 29 (20) ◽  
pp. 31689
Author(s):  
Takeshi Fujisawa ◽  
Kunimasa Saitoh
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Orbital Angular Momentum ◽  
Photonic Crystal Fibers ◽  
Arbitrary Polarization ◽  
Crystal Fibers ◽  
Ring Core

Design tool for circular photonic crystal fibers supporting orbital angular momentum modes

2018 ◽  
Vol 57 (10) ◽  
pp. 2474 ◽  
Author(s):  
Hui Li ◽  
Hu Zhang ◽  
Xiaoguang Zhang ◽  
Zhuo Zhang ◽  
Lixia Xi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Orbital Angular Momentum ◽  
Photonic Crystal Fibers ◽  
Design Tool ◽  
Crystal Fibers

Optimization of photonic crystal fibers for transmission of orbital angular momentum modes

2021 ◽  
Vol 53 (11) ◽  
Author(s):  
Chao Liu ◽  
Haihao Fu ◽  
Chunjie Hu ◽  
Lei Zhou ◽  
Ying Shi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Orbital Angular Momentum ◽  
Photonic Crystal Fibers ◽  
Crystal Fibers

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.

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