Effect of coupling between fundamental and cladding modes on bending losses in photonic crystal fibers

Olszewski, J.; Szpulak, M.; Urbańczyk, Wacław

doi:10.1364/opex.13.006015

Cited by 71 publications

(27 citation statements)

References 1 publication

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“…The simulations performed with greater resolution, allowed observation of oscillatory character of bending losses. Such behavior has already been reported and verified experimentally for the silica microstructured fibers [9][10][11] , but according to the best authors' knowledge, never before for the mPOFs. The oscillations originate from the coupling between the fundamental mode guided in the core and the gallery of the cladding modes which stems from the light reflection at the edge of solid and the holey part of the cladding.…”

Section: Design and Modellingsupporting

confidence: 56%

Microstructured plastic optical fibers for applications in FTTH systems

et al. 2012

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This work is focused on the selected aspects of designing of microstructured POF (mPOF) with relatively large core, limited modal dispersion and improved resistance to bending losses, discussed in the context of its possible application in FTTH systems. The calculations confirmed the possibility of effective controlling both, the propagation and macrobending losses, as well as manipulation on the number of modes and modal area. The careful theoretical analysis allowed to design a series of geometries supporting the propagation of limited number of modes and, simultaneously, relatively large mode area together with limited bending losses.

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Section: Design and Modellingsupporting

confidence: 56%

Microstructured plastic optical fibers for applications in FTTH systems

et al. 2012

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“…5 that within a moderate bend radius, from 20 cm to 50 cm, the design B with rectangle lattice has lower BL for LP 01 mode than design A with triangle lattice. However, due to the bend oscillation [22], [23], the curves of bend loss are not flat and at the specific bend radius of 25 cm, the BL of LP 01 mode for design B is slight higher than that of design A.…”

Section: Rectangle Lattice Propertymentioning

confidence: 92%

Rectangle Lattice Large Mode Area Photonic Crystal Fiber for 2 $\mu$m Compact High-power Fiber Lasers

Wang

Lou

2014

IEEE J. Select. Topics Quantum Electron.

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A rectangle lattice silica-host photonic crystal fiber with large mode area (LMA) is successfully fabricated for the first time. The introduction of rectangle lattice contributes to distinct leakage of second order modes and two large air holes provide an effective solution to suppress bend distortion. Numerical results demonstrate that a large mode field area (MFA) of 2500 μm 2 is achieved at the wavelength of 2 μm when the fiber is straight. While the fiber is bent to a radius of 30 cm, it confirms to single-mode (SM) operation conditions and the decrements of MFA at x polarization and y polarization are just 4.3% and 5%. Within a bend orientation angle of ±10 • and a wide wavelength range from 1.8 μm to 2.4 μm, the fiber can operate under single-mode (SM) conditions with low bend loss. LMA, SM operation, and small bend distortion make this fiber of great potential in developing 2 μm compact high-power fiber lasers.Index Terms-Rectangle lattice, large mode area, photonic crystal fiber, compact high-power laser.

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“…3(a) that there are slight oscillations occurring at the curve of bending loss. The oscillatory character of bending loss is related to the coupling between the fundamental mode and the cladding modes arising due to light reflection from the boundary of the holey part of the cladding [17]. When the cladding modes are 180°out of phase with the fundamental mode, a great amount of power scatters and very little power couples back to the fundamental mode, resulting in a peak of the bending loss [18].…”

Section: Bending Properties Of Lma Pcfmentioning

confidence: 99%

Bend-resistant large-mode-area photonic crystal fiber with a triangular-core

Wang

Lou

2013

Appl. Opt.

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In view of its feasibility for fabrication and application, a bend-resistant large-mode-area photonic crystal fiber with a triangular core is proposed. In our design, the fiber proposes a solution to the issue of bend distortion. The mode field area of the fundamental mode at the wavelength of 1.064 μm achieves 930 μm² at the straight state and 815 μm² at a bending radius of 30 cm, respectively. The decrement of the mode field area at the bend state is only 12.473% compared to the straight state. Furthermore, when the fiber is bent with a bending radius of 30 cm, numerical results demonstrate that the fiber conforms to single-mode operation conditions and the bending orientation angle can be extended to ±55°. A large mode area at bent state and low sensitivity of bending orientation make the fiber of great potential in high-power fiber lasers.

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Effect of coupling between fundamental and cladding modes on bending losses in photonic crystal fibers

Cited by 71 publications

References 1 publication

Microstructured plastic optical fibers for applications in FTTH systems

Microstructured plastic optical fibers for applications in FTTH systems

Rectangle Lattice Large Mode Area Photonic Crystal Fiber for 2 $\mu$m Compact High-power Fiber Lasers

Bend-resistant large-mode-area photonic crystal fiber with a triangular-core

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