Design of a Bragg fiber with large mode area for mid-infrared applications

Ghosh, Somnath; Dasgupta, Sonali; Varshney, R. K.; Richardson, David J.; Pal, Bishnu P.

doi:10.1364/oe.19.021295

Cited by 15 publications

(14 citation statements)

References 27 publications

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“…This fiber design is known as Pixelated Bragg Fiber (PiBF) [25]. PiBF is good candidate for the realization of such single-mode fibers because the use of the appropriate Half Wave Stack (HWS) condition applied to low index ring helps to reject Higher Order Modes (HOM) and make the fiber single-mode [26]. Moreover, high-index rings were heterostructured by replacing some high-index rods by pure silica rods so as to enhance HOM leakage [27].…”

Section: Introductionmentioning

confidence: 99%

Extreme large mode area in single-mode pixelated Bragg fiber

Yehouessi¹,

Vanvincq²,

Cassez³

et al. 2016

Opt. Express

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This paper reports the design and the fabrication of an all-solid photonic bandgap fiber with core diameter larger than 100 µm, a record effective mode area of about 3700 µm at 1035 nm and robust single-mode behavior on propagation length as short as 90 cm. These properties are obtained by using a pixelated Bragg fiber geometry together with an heterostructuration of the cladding and the appropriated generalized half wave stack condition applied to the first three higher order modes. We detail the numerical study that permitted to select the most efficient cladding geometry and present the experimental results that validate our approach.

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Section: Introductionmentioning

confidence: 99%

Extreme large mode area in single-mode pixelated Bragg fiber

Yehouessi¹,

Vanvincq²,

Cassez³

et al. 2016

Opt. Express

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“…These fibers can provide strong interaction between the light and gas that fill the core, thereby allowing a low energy threshold for Raman amplification. The hollow-core Bragg fiber can also provide considerably lower bending losses with same size of mode filed, as compared with PCFs (with a center air hole); these fibers have been reported to negotiate 90°bends without suffering bend-induced losses [7]. The transmission band of the hollow-core Bragg fiber in gas sensing can effectively match the main absorption peak of the target gas.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of an IR hollow-core Bragg fiber based on chalcogenide glass extrusion

et al. 2015

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International audienceThe theoretical analysis and experimental preparation of a hollow-core Bragg fiber based on chalcogenide glasses are demonstrated. The fiber has potential applications in bio-sensing and IR energy transmission. Two chalcogenide glasses with, respectively, high and low refractive indexes are investigated in detail for the fabrication of hollow-core Bragg fibers. The most appropriate structure is selected; this structure is composed of four concentric rings and a center air hole . Its band gap for the Bragg fiber is analyzed by the plane wave method. The chalcogenide glasses Ge15Sb20S58.5I13 and Ge15Sb10Se75 are chosen to extrude the robust multi-material glass preform with a specialized punch and glass container. The glass preform is simultaneously protected with a polyetherimide polymer. The hollow-core Bragg fibers are finally obtained after glass preform extrusion, fiber preform fabrication, and fiber drawing. Results showed that the fiber has a transparency window from 2.5 to 14 μm, including a low-loss transmission window from 10.5 to 12 μm. The location of this low-loss transmission window matches the predicted photonic band gap in the simulatio

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“…This has opened up a wide interest in the development of optical fibers that can efficiently generate mid-IR light [6][7][8][9][10] and passive fibers for high power delivery [11][12][13][14]. LMA fibers are very attractive for guiding and delivering high laser power because of enhanced threshold power limit for material damages to occur.…”

Section: Introductionmentioning

confidence: 99%

“…For example, in a leaky channel fiber, or hollow and solid core MOFs, or in Bragg fibers, or differential gain guiding in multi mode fibers -in all of which differential confinement loss/bend-loss can be exploited to realize effective FM operation [11][12][13][14][20][21][22]. Most of these already reported design philosophies revolve around specifically targeted applications.…”

Section: Introductionmentioning

confidence: 99%

Ultra-large mode area microstructured core chalcogenide fiber design for mid-IR beam delivery

Barh¹,

Ghosh²,

Varshney³

et al. 2013

Optics Communications

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An all-solid large mode-area (LMA) chalcogenide-based microstructured core optical fiber (MCOF) is designed and proposed for high power handling in the mid-IR spectral regime, covering the entire second transparency window of the atmosphere (3 -5 μm). The core of the proposed specialty fiber is composed of a few rings of high index rods arranged in a pattern of hexagon. Dependence of effective mode area on the pitch and radius of high index rods are studied. Ultra-high effective mode area up to 75,000 μm 2 can be achieved over this specific wavelength range while retaining its single-mode characteristic. A negligible confinement loss along with a low dispersion slope (~ 0.03 ps/km-nm 2 ) and a good beam quality factor (M 2 ~ 1.17) should make this LMA fiber design attractive for fabrication as a potential candidate suitable for high power, passive applications at the mid-IR wavelength regime.

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Design of a Bragg fiber with large mode area for mid-infrared applications

Cited by 15 publications

References 27 publications

Extreme large mode area in single-mode pixelated Bragg fiber

Extreme large mode area in single-mode pixelated Bragg fiber

Fabrication of an IR hollow-core Bragg fiber based on chalcogenide glass extrusion

Ultra-large mode area microstructured core chalcogenide fiber design for mid-IR beam delivery

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