Design of Polarization Splitter via Liquid and Ti Infiltrated Photonic Crystal Fiber

Xu, Qiang; Luo, Wanli; Li, Kang; Copner, Nigel; Lin, Shu

doi:10.3390/cryst9020103

Cited by 16 publications

(10 citation statements)

References 49 publications

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“…It can be observed from Figure 16 Table 2 presents a comparison of the simulation results between the DC-PCF PBS and other reported DC-PCF PBSs. By observing Table 2, it is maximum ER values in references [12,14,[35][36][37] are all higher than those wit However, it is worth noting that the operational bandwidth of PCF PBS refe length range where ER is greater than 20 dB, while in some studies, the ope width may only exceed 10 dB [12,38] or 15 dB [36]. Therefore, even if the value at a certain wavelength is high, the final spectral bandwidth may not the widest.…”

Section: Simulation Results and Discussionmentioning

confidence: 90%

Dual-Core Photonic Crystal Fiber Polarization Beam Splitter Based on a Nematic Liquid Crystal with an Ultra-Short Length and Ultra-Wide Bandwidth

Ji,

Du,

Dai

et al. 2024

Electronics

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This paper presents a novel pentagonal structure dual-core photonic crystal fiber polarizing beam splitter (PS-DC-PCF PBS) filled with a nematic liquid crystal (NLC) in the central hole. Unlike previous designs with symmetric arrangements, the upper and lower halves of the structure have different air hole arrangements. The upper half consists of air holes arranged in a regular quadrilateral pattern, while the lower half features a regular hexagonal arrangement of air holes. By filling the central hole with birefringent liquid crystal, the birefringence of the structure is enhanced, reducing the coupling lengths along the x polarization and y polarization directions. The polarization properties, coupling characteristics, and the influence of different structural parameters on the extinction ratio of the polarizing beam splitter are analyzed using the full-vector finite element method. Simulation results demonstrate that the designed PS-DC-PCF PBS achieves a maximum extinction ratio (ER) of 72.94 dB with a splitting length of only 61.9 μm and a wide operating bandwidth of 423 nm (1.324–1.747 μm), covering most of the O, E, S, C, L, and U communication bands. It exhibits not only ultra-short splitting lengths and ultra-wide splitting bandwidth but also good manufacturing tolerances and anti-interference capabilities. The designed PS-DC-PCF PBS could provide crucial device support for future all-optical communication systems and has potential applications in fiber optic communication or fiber laser systems.

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Section: Simulation Results and Discussionmentioning

confidence: 90%

Dual-Core Photonic Crystal Fiber Polarization Beam Splitter Based on a Nematic Liquid Crystal with an Ultra-Short Length and Ultra-Wide Bandwidth

Ji,

Du,

Dai

et al. 2024

Electronics

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“…This design is known as multicore photonic crystal fibres (MPCFs), which depend on the coupling behaviour between cores [5]. These MPCFs have been recently implemented in various applications for identical cores, such as couplers [18][19][20][21][22][23][24], power splitters [25][26][27][28], couplers based on high birefringence [29,30], and sensors [16,[31][32]. Non-identical cores, it can also be used in the alloptical logic operation [33], coupling [34], mode selective couplers [35], zero-differential group delay [36], high power lasers [37], polarisation splitters [38], tunable mode converter devices [39], and multiplexers and de-multiplexers [40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of strongly coupled multicore photonic crystal fibres for multiplexer and de-multiplexer applications

Mohammed

Ahmad

2022

J. Phys.: Conf. Ser.

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In this study, the coupling properties of multicore photonic crystal fibers (MCPCFs) are analyzed numerically using COMSOL Multiphysics 5.5, based on the finite element method. The dependence of the coupling properties on the structure of the MCPCFs and the wavelength are investigated to realize applications such as multiplexers-demultiplexers for wavelength division multiplexing. The effective mode indexes and transverse electric field distributions of multiple cores are evaluated for different spatial configurations of identical and non-identical cores. A slight change in the central core diameter relative to adjacent cores leads to non-identical cores that lead to wavelength-dependent coupling properties, such as the coupling lengths and strength of the coefficients. The results show that the coupling lengths become longer and the strength coefficients become smaller as the wavelength decreases for non-identical cores than the identical cores. The introduction of anisotropy to all core diameters shows that the coupling lengths become longer and the strength of the coefficients become smaller as the wavelength decreases as well, and both values become lower than the ones for non-identical cores. These results prove that coupling lengths of MCPCF couplers are significantly shorter in μm compared to conventional multicore optical fiber couplers.

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“…Recently, developments have revealed that multicore photonic crystal fiber [12], which has attracted interest from researchers for the flexibility of its design, easy manufacturing process, and many research interests are shown towards MPCF couplers [7], the coupling properties of MPCF with adjacent identical cores, useful for coupling [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15], splitter [16], switching [17][18]. Besides, it possesses the possibility of realizing a multiplexerdemultiplexer (MUX-DEMUX) [5].…”

Section: Introductionmentioning

confidence: 99%

“…Generally, one can happen difference between the cores of PCF and become non-identical; either by using different index profile, or by using different dimensions, causing changing in refractive index distribution, and this leads to a unequal power distribution in the core of MCPCF. The MPCF coupler with nonidentical cores can also be used for coupling [8,12,19,20], switching [17], and to achieving equal group velocities for different cores to reduce intermodal dispersion [20].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Light Propagation in Identical and Non-Identical Multicore Photonic Crystal Fibers

Mohammed

Ahmad

2020

ANJS

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Multicore photonic crystal fibers (MPCF) with identical and non-identical cores are analyzed numerically using Comsol Multiphysics software. Investing coupling between cores limiting by parameters, such as the slight change in central core diameter; the separation distance between cores and the wavelength were investigated. Controlling these parameters allows predicting the mode propagation. Moreover, anisotropy in all cores diameters of multicores photonic crystal fibers, as a result, the change of all core diameters simultaneously lead to different of coupling behavior, suppresses the coupling between the core modes by inducing a small mismatch between the modes such that the core modes to be uncoupled through this change. Then this leads to the light mode propagate independently of their neighbors and gives rise to the mode to primarily remain in a certain region of the MPCF array. These properties suggest that multicore PCFs could be a novel candidate for both multiplex or de-multiplex.

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Design of Polarization Splitter via Liquid and Ti Infiltrated Photonic Crystal Fiber

Cited by 16 publications

References 49 publications

Dual-Core Photonic Crystal Fiber Polarization Beam Splitter Based on a Nematic Liquid Crystal with an Ultra-Short Length and Ultra-Wide Bandwidth

Dual-Core Photonic Crystal Fiber Polarization Beam Splitter Based on a Nematic Liquid Crystal with an Ultra-Short Length and Ultra-Wide Bandwidth

Numerical analysis of strongly coupled multicore photonic crystal fibres for multiplexer and de-multiplexer applications

Analysis of Light Propagation in Identical and Non-Identical Multicore Photonic Crystal Fibers

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