Panda Type Few-Mode Fiber Capable of Both Mode Profile and Polarization Maintenance

Fu, Songnian; Wang, Yanlin; Cui, Jingxian; Mo, Qi; Chen, Xi; Chen, Bin; Tang, Ming; Liu, Deming

doi:10.1109/jlt.2018.2877626

Cited by 21 publications

(2 citation statements)

References 25 publications

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“…Extensive experiments and simulations have been performed to determine the shapes of these distributions. In addition, the fundamental characteristics have been studied to predict what conditions are necessary for the existence of these modes [63][64][65][73][74][75][76][77][78][79]. We are intentionally Theory interested in 3 of them, starting with the fundamental mode (Gaussian) or usually called LP 01 mode.…”

Section: From Maxwell Equations To Linearly Polarized Modesmentioning

confidence: 99%

A Few-Mode-Fiber Platform for Quantum Communication Applications

Cuevas

2022

Linköping Studies in Science and Technology. Licentiate Thesis

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Society as we know it today would not have been possible without the explosive and astonishing development of telecommunications systems, and optical fibers have been one of the pillars of these technologies.Despite the enormous amount of data being transmitted over optical networks today, the trend is that the demand for higher bandwidths will also increase. Given this context, a central element in the design of telecommunications networks will be data security, since information can often be confidential or private.Quantum information emerges as a solution to encrypt data by quantum key distribution (QKD) between two users. This technique uses the properties of nature as the fundamentals of operation rather than relying on mathematical constructs to provide data protection. A popular alternative to performing QKD is to use the relative phase between two individual photon paths for information encoding. However, this method was not practical over long distances. The timebin-based scheme was a solution to the previous problem given its practical nature, however, it introduces intrinsic losses due to its design, which increases with the dimension of the encoded quantum system.In this thesis we have designed and tested a fiber-optic platform using spatialdivision-multiplexing techniques. The use of few-mode fibers and photonic lanterns are the cornerstone of our proposal, which also allow us to support orbital angular momentum (OAM) modes. The platform builds on the core ideas of the phasecoded quantum communication system and also takes advantage of the benefits proposed by the time-bin scheme. We have experimentally tested our proposal by successfully transmitting phase-coded single-photon states over 500 m few-mode fiber, demonstrating the feasibility of our scheme. We demonstrated the successful creation of OAM states, their propagation and their successful detection in an all in-fiber scheme. Our platform eliminates the post-selection losses of time-bin quantum communication systems and ensures compatibility with next-generation optical networks and opens up new possibilities for quantum communication. v vi always and I hope we can remain friends forever.To Camilo, one of the brightest people I've ever met, my current roommate and friend. I hope that we continue to have thousands of inspiring conversations and that gravity never fails in our environment.To Yerko, that person who arrives at a very hard time for our country and for my life. If it wasn't for you, I might have fallen into despair many times. Thanks for everything, let the crazy conversations continue for a long time.For Lady Fahrenheit I should write a whole book giving thanks for her influence in my life, so here I will try try to summarize. Thank you for always being there, for giving me the infinite tranquility that I can always count on you, for being my accomplice in so many crazy thoughts. For supporting all my dreams and for being such an intense light in my darkest moments.One paragraph will not do justice to everything I have to say about...

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Section: From Maxwell Equations To Linearly Polarized Modesmentioning

confidence: 99%

A Few-Mode-Fiber Platform for Quantum Communication Applications

Cuevas

2022

Linköping Studies in Science and Technology. Licentiate Thesis

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“…When both spatial and polarization mode degeneration can be mitigated, it is possible to secure more parallel independent mode channels without the use of MIMO signal processing. Therefore, the introduction of polarization-maintaining (PM) SDM fibers can not only increase the number of independent parallel channels, but also reduce the cost and complexity of receiver [10][11][12][13][14][15]. A panda-type four-core fiber with only four stress rods to achieve 8 independent channels has been reported by combining the PM structure with the MCF [16].…”

Section: Introductionmentioning

confidence: 99%

Polarization-Maintaining Multi-Core Few-Mode Fiber With a Cladding Diameter of 125 μm

Wang

Qin

et al. 2021

IEEE Photonics J.

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We present the theoretical study of polarization-maintaining multi-core few-mode fiber (PM MC-FMF) with a cladding diameter of 125 μm, in order to secure the maximum number of independent spatial channels arising in the single fiber. By taking both the intercore crosstalk (XT) and the intra-core mode coupling into account, we identify that the PM five-core three-mode fiber is able to provide 19 parallel channels without the need of MIMO signal processing. After the numerical optimizations, the inter-core XT of MC-FMF is less than -30 dB/100km, due to the use of trench-assisted heterogeneous core distribution. Meanwhile, the effective refractive index (RI) differences among both spatial modes and polarization modes are more than 8×10 -4 and 3.26×10 -4 over the C+L band, respectively, due to the introduction of stress and geometric birefringence. Moreover, the cladding diameter of such MC-FMF is the same as that of the standard single-mode fiber (SSMF), leading to a convenient upgrading from the SSMF to the MC-FMF.

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Random Coupling Theory for Multi-mode Waveguides and Free Space Propagation

Zhou,

Tong

2024

Springer Series in Optical Sciences

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Panda Type Few-Mode Fiber Capable of Both Mode Profile and Polarization Maintenance

Cited by 21 publications

References 25 publications

A Few-Mode-Fiber Platform for Quantum Communication Applications

A Few-Mode-Fiber Platform for Quantum Communication Applications

Polarization-Maintaining Multi-Core Few-Mode Fiber With a Cladding Diameter of 125 μm

Random Coupling Theory for Multi-mode Waveguides and Free Space Propagation

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