Design of a flat field fiber with very small dispersion slope

Varshney, R. K.; Ghatak, Ajoy; Goyal, I.C.; C, Siny Antony

doi:10.1016/s1068-5200(03)00042-7

Cited by 31 publications

(36 citation statements)

References 19 publications

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“…The absolute value of dispersion slope of the designed fiber is smaller over a larger bandwidth than that of fiber reported in Ref. [13]. Thus flattened dispersion with desired dispersion value and ultra-large effective area has been achieved with proposed design over a wide range of wavelength.…”

Section: Design Of Positive Non-zero Dispersion Flattened Fibermentioning

confidence: 76%

“…Table 4 shows characteristics of the designed fiber which are compared with the already existing fiber design reported in Ref. [13]. We see that the proposed design has nearly three times larger effective area at 1.55 µm.…”

Section: Design Of Positive Non-zero Dispersion Flattened Fibermentioning

confidence: 94%

“…They have shown dispersion of the proposed fiber as 2.7-3.4 ps/km/nm within the wavelength range of 1.53-1.61 µm. The dispersion slope of the designed fiber at 1.55 µm wavelength is 0.01 ps/km/nm 2 [13]. However, the mentioned wavelength range of the fiber does not cover the entire S+C+L band.…”

Section: Introductionmentioning

confidence: 99%

“…But in optical network the placement of dispersion compensating module increases the cost of the system, loss added by dispersion compensating module increases effective noise figure of the system and different optical channels in a fiber see different amount of accumulated dispersion. To overcome this difficulty fibers with small finite dispersion and dispersion slope have been proposed [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…The small core radius of the fiber results in small effective area and restricts its application in DWDM long-haul optical communication system [14]. Varshney et al have proposed design of a flat field fiber with positive dispersion and small dispersion slope over the wavelength range of 1.53-1.61µm [13]. In this fiber they have reported effective area of 56.1 µm 2 at 1.55 µm wavelength.…”

Section: Introductionmentioning

confidence: 99%

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Segmented-Core Single Mode Optical Fiber With Ultra-Large-Effective-Area, Low Dispersion Slope and Flattened Dispersion for DWDM Optical Communication Systems

Hooda¹,

Rastogi²

2013

PIER B

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Abstract-In this paper we present designs of fibers having non-zero positive, non-zero negative and near-zero ultra-flattened dispersion with small dispersion slope and ultra-large effective area over a wide spectral range. The designs consist of a concentric multilayer segmented core followed by a trench assisted cladding and a thin secondary core. The central segmented core helps in maintaining desired dispersion over a wide range of wavelength. The second core of the fiber helps in achieving ultra-large effective area and trench assisted cladding reduces the bending loss. The designs of the fiber have been analyzed by using the transfer matrix method. For positive non-zero dispersion flattened fiber we have optimized dispersion near +4.5 ps/km/nm in the wavelength range 1.46-1.65 µm. Maximum value of dispersion slope of the fiber in above mentioned wavelength range is 0.026 ps/km/nm 2 . In the design of negative non-zero dispersion flattened fiber, dispersion has been achieved near −6 ps/km/nm in the spectral range of 1.33-1.56 µm and maximum value of dispersion slope is 0.048 ps/km/nm 2 . Dispersion and dispersion slope of near zero dispersion flattened fiber lie in the range [0.0039-0.520] ps/km/nm and [(0.0004)-(0.0365)] ps/km/nm 2 respectively in the spectral range of 1.460-1.625 µm. The near zero dispersion flattened fiber has an ultra-high effective area ranging from 114 µm 2 to 325.95 µm 2 in the aforementioned wavelength range, which covers the entire S+C+L-band. These values of mode area are noticeably higher than those reported in literature for flattened dispersion fibers with large mode area. Designed fiber shows very small bending loss. We report breakthrough in the mode area of the single mode optical fiber with ultra flattened dispersion and low dispersion slope.

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Section: Design Of Positive Non-zero Dispersion Flattened Fibermentioning

confidence: 76%

Section: Design Of Positive Non-zero Dispersion Flattened Fibermentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Segmented-Core Single Mode Optical Fiber With Ultra-Large-Effective-Area, Low Dispersion Slope and Flattened Dispersion for DWDM Optical Communication Systems

Hooda¹,

Rastogi²

2013

PIER B

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A novel fibre design strategy for simultaneously introducing ultra small dispersion and dispersion slope using genetic algorithm

Oskouei

Rostami

Makouei

2007

Trans Emerging Tel Tech

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SUMMARYIn this paper, design of the WII triple-clad structure as a dispersion flattened optical fibre applicable for high bit rate optical communications such as DWDM and OTDM is considered. The presented technique is based on the genetic algorithm (GA) method including a weighted fitness function. In the foregoing strategy what we believe to be a novel design methodology, a multivariables design problem is reduced to a twodimensional design process (, l 0 ) and this reduction is so excellent from designing point of view. The suggested weighted fitness function is capable of gathering optimal values for the dispersion and its slope simultaneously. The achieved results for the dispersion and slope at [1.5-1.6] mm wavelength interval were in [(À0.510)-(0.191)] ps/km/nm and [0.0137-0.0007] ps/km/nm 2 ranges, respectively. We show that by increasing the Gaussian parameter () of the weighted fitness function the dispersion reduces and becomes flattened in the wide wavelength interval. For example, in the case of ¼ 4.9467e-8 the dispersion flattened broadness is larger than 120 nm. The proposed technique based on the weighted fitness function includes another design parameter, called central wavelength (l 0 ), which introduces additional capability to shift the zero dispersion wavelength at the arbitrary l 0 precisely. So, this fibre structure can be designed to work in each standard communication bands (S, C, and L bands). The technique put forward is capable of minimising the pulse broadening factor over the predefined interval of wavelength that is essential for large bandwidth applications. It should be mentioned that the dispersion and its slope are evaluated analytically and then the presented results have supreme precision compared to the traditional methods.

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Influence of dip on propagation properties of step index fiber dedicated to bright solitons transmission

Kaczmarek

2014

Opt Quant Electron

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Design of a flat field fiber with very small dispersion slope

Cited by 31 publications

References 19 publications

Segmented-Core Single Mode Optical Fiber With Ultra-Large-Effective-Area, Low Dispersion Slope and Flattened Dispersion for DWDM Optical Communication Systems

Segmented-Core Single Mode Optical Fiber With Ultra-Large-Effective-Area, Low Dispersion Slope and Flattened Dispersion for DWDM Optical Communication Systems

A novel fibre design strategy for simultaneously introducing ultra small dispersion and dispersion slope using genetic algorithm

Influence of dip on propagation properties of step index fiber dedicated to bright solitons transmission

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