Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap Fiber

We propose mode couplers and converters based on dual-core hollow-core photonic bandgap fiber (HC-PBGF) structures, which might be potential solutions for integrated all-fiber multiplexers or demultiplexers of a mode-division multiplexed (MDM) transmission system using HC-PBGFs. Coupling properties...

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Main Authors: Simeng Han, Zhi Wang, Yange Liu, Hongye Li, Hu Liang, Zhenhong Wang
Format: Article
Language:English
Published: IEEE 2018-01-01
Series:IEEE Photonics Journal
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Online Access:https://ieeexplore.ieee.org/document/8304672/
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author Simeng Han
Zhi Wang
Yange Liu
Hongye Li
Hu Liang
Zhenhong Wang
author_facet Simeng Han
Zhi Wang
Yange Liu
Hongye Li
Hu Liang
Zhenhong Wang
author_sort Simeng Han
collection DOAJ
description We propose mode couplers and converters based on dual-core hollow-core photonic bandgap fiber (HC-PBGF) structures, which might be potential solutions for integrated all-fiber multiplexers or demultiplexers of a mode-division multiplexed (MDM) transmission system using HC-PBGFs. Coupling properties of <inline-formula> <tex-math notation="LaTeX">${\text{LP}}_{01}$</tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">${\text{LP}}_{11}$</tex-math></inline-formula> mode in the mode coupler are investigated and applied to mode separators and polarization separators. Mode transition from <inline-formula> <tex-math notation="LaTeX">${\text{LP}}_{01}$</tex-math></inline-formula> to <inline-formula><tex-math notation="LaTeX"> ${\text{LP}}_{11}$</tex-math></inline-formula> and <inline-formula><tex-math notation="LaTeX">${\text{LP}}_{21}$ </tex-math></inline-formula> mode are demonstrated in the mode converter whose smaller core is expected as input end and matched with single-mode fiber. The coupling between fundamental mode and high-order modes is accomplished through the resonant effect, which is fulfilled by modifying the structure parameter of the smaller core. Such mode converters based on dual-core HC-PBGF could be a promising substitute for the free-space coupling device, which is costly and not suitable for integration design in MDM systems and other hollow-core fiber experiments and applications.
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spelling doaj-art-7e8fa947ff3e42adb6a566b378ecd6b52025-08-20T03:32:57ZengIEEEIEEE Photonics Journal1943-06552018-01-011021810.1109/JPHOT.2018.28100598304672Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap FiberSimeng Han0Zhi Wang1Yange Liu2Hongye Li3Hu Liang4Zhenhong Wang5Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, and Institute of Modern Optics, Nankai University, Tianjin, ChinaTianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, and Institute of Modern Optics, Nankai University, Tianjin, ChinaTianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, and Institute of Modern Optics, Nankai University, Tianjin, ChinaTianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, and Institute of Modern Optics, Nankai University, Tianjin, ChinaTianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, and Institute of Modern Optics, Nankai University, Tianjin, ChinaTianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, and Institute of Modern Optics, Nankai University, Tianjin, ChinaWe propose mode couplers and converters based on dual-core hollow-core photonic bandgap fiber (HC-PBGF) structures, which might be potential solutions for integrated all-fiber multiplexers or demultiplexers of a mode-division multiplexed (MDM) transmission system using HC-PBGFs. Coupling properties of <inline-formula> <tex-math notation="LaTeX">${\text{LP}}_{01}$</tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">${\text{LP}}_{11}$</tex-math></inline-formula> mode in the mode coupler are investigated and applied to mode separators and polarization separators. Mode transition from <inline-formula> <tex-math notation="LaTeX">${\text{LP}}_{01}$</tex-math></inline-formula> to <inline-formula><tex-math notation="LaTeX"> ${\text{LP}}_{11}$</tex-math></inline-formula> and <inline-formula><tex-math notation="LaTeX">${\text{LP}}_{21}$ </tex-math></inline-formula> mode are demonstrated in the mode converter whose smaller core is expected as input end and matched with single-mode fiber. The coupling between fundamental mode and high-order modes is accomplished through the resonant effect, which is fulfilled by modifying the structure parameter of the smaller core. Such mode converters based on dual-core HC-PBGF could be a promising substitute for the free-space coupling device, which is costly and not suitable for integration design in MDM systems and other hollow-core fiber experiments and applications.https://ieeexplore.ieee.org/document/8304672/Fiber communicationfiber couplershollow-core photonic bandgap fibermode conversion.
spellingShingle Simeng Han
Zhi Wang
Yange Liu
Hongye Li
Hu Liang
Zhenhong Wang
Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap Fiber
IEEE Photonics Journal
Fiber communication
fiber couplers
hollow-core photonic bandgap fiber
mode conversion.
title Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap Fiber
title_full Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap Fiber
title_fullStr Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap Fiber
title_full_unstemmed Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap Fiber
title_short Mode Couplers and Converters Based on Dual-Core Hollow-Core Photonic Bandgap Fiber
title_sort mode couplers and converters based on dual core hollow core photonic bandgap fiber
topic Fiber communication
fiber couplers
hollow-core photonic bandgap fiber
mode conversion.
url https://ieeexplore.ieee.org/document/8304672/
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