Ultra-wide bandwidth wavelength selective couplers based on the all solid multi-core Ge-doped fibre

Li, X.; Sun, Bo; Yu, Yingying

doi:10.2478/s11772-014-0193-z

Cited by 4 publications

(5 citation statements)

References 21 publications

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Section: Numerical Analysis and Simulated Resultsmentioning

confidence: 99%

“…Taking into account the actual fabrication process, the structural accuracy may be influenced by the nonuniformity of the device itself. To further analyze the geometrical errors, we define the power difference (PD) of core A and core B, PD as [32,36]: PD = 10 log 10 P coreA P coreB (2) where P coreA and P coreB are the output power of core A and core B, respectively. The fabrication flexibility is discussed as shown in Figure 9.…”

Section: Numerical Analysis and Simulated Resultsmentioning

confidence: 99%

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Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Sun

2018

Crystals

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Abstract:We propose a tunable magnetic fluid-filled hybrid photonic crystal fiber mode converter. Innovative design principles based on the hybrid connected dual-core photonic crystal fiber and magnetically modulated optical properties of magnetic fluid are developed and numerically verified. The mode converter was designed to convert LP 11 in the index-guiding core to the LP 01 mode in the photonic bandgap-guiding core. By introducing the magnetic fluid into the air-hole located at the center of the photonic bandgap-guiding core, the mode converter can realize a high coupling efficiency and an ultra-wide bandwidth. The coupling efficiency can reach up to 99.9%. At a fixed fiber length, by adjusting the strength of the magnetic field, the coupling efficiency can reach up to 90% and 95% at wavelengths in the ranges of 1.33 µm-1.85 µm and 1.38 µm-1.75 µm, with bandwidth values reaching 0.52 µm and 0.37 µm, respectively. Moreover, it has a good manufacturing flexibility. The mode converter can be used to implement wideband mode-division multiplexing of few-mode optical fiber for high-capacity telecommunications.

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Section: Numerical Analysis and Simulated Resultsmentioning

confidence: 99%

Section: Numerical Analysis and Simulated Resultsmentioning

confidence: 99%

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Sun

2018

Crystals

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“…The local field distribution at any position along the MMI section is given by a superposition of the guided modes of the multimode waveguide in Eq. (8). The propaga− tion constant for the waveguide at core can be approximated by Eq.…”

Section: Design and Analysis Of A MMI Based Demultiplexermentioning

confidence: 99%

“…In the recent past, various types of wavelength division multiplexing and demultiplexing de− vices have been proposed and demonstrated [1]. Several integrated−optical schemes have been proposed to perform the function, including conventional directional couplers [2], asymmetric Y−branching devices [3], asymmetric Mach− −Zehnder interferometers [4], MMI coupler [5][6][7], and multi− −core fibre [8]. Among them, MMI−based demultiplexers have attracted much attention because of compact size, low loss, larger fabrication tolerance and the broad bandwidth properties of MMI waveguides [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of InP/InGaAsP-MMI based 1310/1550-nm wavelength division demultiplexer with tapered waveguide geometry

Chack

Kumar

Raghuwanshi

2015

Opto-Electronics Review

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The design and performance analysis of a 1310/1550-nm wavelength division demultiplexer with tapered geometry based on InP/InGaAsP multimode interference (MMI) coupler has been carried out. Wavelength response of demultiplexer of conventional MMI and tapered input and tapered output (tapered I/O) waveguides geometry of the MMI have been discussed. The demultiplexing function has been first performed by choosing a suitable refractive index of the guiding region and geometrical parameters such as the width and length of MMI structure have been achieved. Access width of tapered I/O waveguides have been adjusted to give a low insertion loss (IL) and high extinction ratio (ER) for the considered wavelengths of 1310 nm and 1550 nm. The total size of the demultiplexer has been significantly reduced over the existing MMI devices. Numerical simulations with finite difference beam propagation method are applied to design and optimize the operation of the proposed demultiplexer.

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“…Meanwhile, N-core MCFs commonly support at least N supermodes [20][21][22], and optical pulse broadening due to intermodal dispersion will severely deteriorate the performance of fiber-optic communication systems. Hence, the research on MCFs is mainly confined in the following four areas: low-cross-talk MCFs for space-division multiplexing (SDM) systems [23], large-mode-area MCFs for fiber lasers [24], MCF couplers [25], and MCF sensors [26]. To the best of our knowledge, there are still no reports regarding wideband nearly zero flattened dispersion MCFs with single-supermode transmission.…”

Section: Introductionmentioning

confidence: 99%

Trench-Assisted Multicore Fiber with Single Supermode Transmission and Nearly Zero Flattened Dispersion

Wang

Qiu

et al. 2018

Applied Sciences

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A trench-assisted multicore fiber (TA-MCF) with single-supermode transmission and nearly zero flattened dispersion is proposed herein. By adding a simplified microstructure cladding with only one ring of low-index inclusions on the basis of the multicore fiber, the microstructure cladding and mode-coupling mechanism were jointly employed into the TA-MCF to modulate light transmission. This guarantees that the TA-MCFs had sufficient capability for wideband dispersion management when only pure, germanium-doped, and fluorine-doped silica glass with low index differences were chosen to form the TA-MCF. Analyses also revealed that the TA-MCFs have the merits of shorter cut-off wavelength and flatter-top optical intensity distribution compared with traditional multicore fibers. After the investigation of the structural parameters’ influences on the dispersion of the fundamental supermode, two TA-MCFs with single-supermode transmission and nearly zero flattened dispersion were designed. For the seven-core TA-MCF, the dispersion varying from −0.46 to 1.35 ps/(nm·km) in the wavelength range of 1.50 to 2.04 μm, with bending loss as low as 0.085 dB/km and 35-mm bending radius at 1550 nm was achieved with index difference less than 0.015. The TA-MCFs proposed herein have the advantages of being a quasi-single material, with an all solid scheme and simplified structure.

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Ultra-wide bandwidth wavelength selective couplers based on the all solid multi-core Ge-doped fibre

Cited by 4 publications

References 21 publications

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Design and performance analysis of InP/InGaAsP-MMI based 1310/1550-nm wavelength division demultiplexer with tapered waveguide geometry

Trench-Assisted Multicore Fiber with Single Supermode Transmission and Nearly Zero Flattened Dispersion

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