Effects of Air Holes in the Cladding of Photonic Crystal Fibers on Dispersion and Confinement Loss of Orbital Angular Momentum Modes

Abstract In the development of orbital angular momentum (OAM) mode division multiplexing (MDM), the capacity of optical fiber communication must be improved. However, owing to dispersion and confinement loss, many OAM modes do not propagate stably over a long distance in optical fibers. In this work, the effects of the size, number, shape, number of layers, and layer spacing of air holes in the cladding of the fiber on the dispersion and confinement loss are analyzed based on a simple structure. The trends are studied and summarized to facilitate the design of optical fibers to achieve stable transmission of OAM modes over a long distance.

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

Photonics ◽

10.3390/photonics8040122 ◽

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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Combining spatial domain multiplexing and orbital angular momentum of photon-based multiplexing to increase the bandwidth of optical fiber communication systems

Optical Engineering ◽

10.1117/1.oe.55.6.066124 ◽

2016 ◽

Vol 55 (6) ◽

pp. 066124 ◽

Cited By ~ 4

Author(s):

Syed Murshid ◽

Saud Alanzi ◽

Arnob Hridoy ◽

Gregory L. Lovell ◽

Gurinder Parhar ◽

...

Keyword(s):

Angular Momentum ◽

Optical Fiber ◽

Orbital Angular Momentum ◽

Communication Systems ◽

Optical Fiber Communication ◽

Spatial Domain ◽

Fiber Communication

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Broadband and low confinement loss photonic crystal fibers supporting 48 orbital angular momentum modes

Third International Conference on Photonics and Optical Engineering ◽

10.1117/12.2521825 ◽

2019 ◽

Author(s):

Ping Jiang ◽

Huajun Yang ◽

Ye Niu ◽

Fengji Gui ◽

Yan Qin

Keyword(s):

Angular Momentum ◽

Photonic Crystal ◽

Orbital Angular Momentum ◽

Photonic Crystal Fibers ◽

Confinement Loss ◽

Crystal Fibers

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Furtherance in Splicing Technique of Optical Fiber Communication

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.c6208.029320 ◽

2020 ◽

Vol 9 (3) ◽

pp. 3505-3609

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

High Speed ◽

Single Mode ◽

Optical Fiber Communication ◽

Communication Line ◽

Long Distance ◽

Fiber Communication ◽

Splice Loss ◽

Distance Communication

The improvement in technology over long distance communication using optical fiber has been regulated over past few decades, and it took drastic enhancement in one of the major parameter for joining two OFC cable (splicing). The different experiments performed in order to bring about the result that can give nearly 0dB splice loss when there is shifting of entire set up of Optical Fiber Communication. The splicing loss is created by the joining of two SMF using fiber optic fusion splicing. The objective of this paper is to determine the low splice loss in joining two single mode or multimode optical fiber, such that long distance communication that required multiple infrastructure assembly for its operational unit can be made relocatable as there is large investment and material and electronic circuitry is associated to it. Therefore to reduce that cost we have sets of analysis that splicing loss can be reduced to 0dB for SMFSMF end face connection or at least no improvement in splice losses while relocation of OFC infrastructure from one place to other place as the result of the tested experiment. Based on experiment conducted we came to conclusion that with essential requirements for establishing a low-loss and high-speed communication line using optical fibers, the need for quality of splicing technology along with perfect core alignment angle is required to reduce splice loss, such that the infrastructure can be shifted to many different location without any additional cost of new material and new resources. The exact measurement of splice loss can be insured by another set of formula which we came across during the experimental performance.

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Backbone Optical Fiber Analysis at 1310 nm and 1550 nm

Journal of Optical Communications ◽

10.1515/joc-2018-0042 ◽

2018 ◽

Vol 0 (0) ◽

Author(s):

Nandhakumar P ◽

Arun Kumar

Keyword(s):

Optical Fiber ◽

Real Time ◽

Optical Fibers ◽

Single Mode ◽

Optical Fiber Communication ◽

Long Distance ◽

Fiber Communication ◽

The Real ◽

Optical Time Domain Reflectometer ◽

Optic Communication

AbstractOptical fiber communication is the backbone of the entire telecommunication industries in the world. In this work, the real-time backbone long-distance optical fibers (single mode) are tested and analyzed with two different wavelengths (1,310 nm and 1,550 nm) with the help of optical time domain reflectometer. Using these two different wavelengths, how the losses and events of the backbone optical fibers are changing are compared and analyzed. This work will give a way to study the nature of long-distance backbone optical fiber and understand the real-time application of the fiber optic communication.

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