Dispersion flattened fiber with large-effective-core area more than 50 μm/sup 2/

Hatayama, H.; Kato, Takashi; Onishi, M.; Sasaoka, Eisuke; Nishimura, Masayuki

doi:10.1109/ofc.1998.657422

Cited by 4 publications

(5 citation statements)

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“…We have calculated the bending loss of the fiber using Eq. (5) [21]. The macrobending loss of the fiber at 1.55 µm for bending radius 10 mm is 1.427 × 10 −8 dB/km.…”

Section: Compatibility Of the Proposed Fiber With Conventional Fibermentioning

confidence: 98%

“…Negative dispersion fibers can balance the positive chirp characteristic of directly modulated laser (DML) transmitters and can enhance transmission distance. To achieve this, suitable refractive index profiles of the fibers which lead to small dispersion, dispersion slope and large effective area have been developed [18][19][20][21]. Recently, we proposed a segmented core design for large-modearea near-zero dispersion flattened fiber [22].…”

Section: Introductionmentioning

confidence: 99%

“…Hatayama et al have reported dispersion flattened fiber with effective area more than 50 µm 2 [21]. However, the bandwidth that could be achieved is small for DWDM applications [20].…”

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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“…We have calculated the bending loss of the fiber using Eq. (5) [21]. The macrobending loss of the fiber at 1.55 µm for bending radius 10 mm is 1.427 × 10 −8 dB/km.…”

Section: Compatibility Of the Proposed Fiber With Conventional Fibermentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…Nonlinear effect problems like cross phase modulation (XPM), which limits the number of different wavelength signals, can be solved by increasing effective area of the fiber. Thus, very high bit rate information transmission for long distances can be achieved using DWDM systems with fibers having high effective area as well as small dispersion and dispersion slope [1,2].…”

Section: Introductionmentioning

confidence: 99%

Modified W-Type Single-Mode Optical Fiber Design With Ultra-Low, Flattened Chromatic Dispersion and Ultra-High Effective Area for High Bit Rate Long Haul Communications

Rostami

Makouei²

2010

PIER C

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A proposal for the new modified W type optical fiber structure with ultra high effective area and small dispersion as well as dispersion slope is presented. For the proposed structure, all these features are achieved due to placing extra depressed cladding layers, which is the key to achieve higher effective area and flat dispersion curve compared with the conventional W structures. Meanwhile, the suggested design method is based on the Genetic Algorithm optimization technique to choose optimal value for the structural parameters. Also, our calculation for extracting optical properties of the proposed structure is evaluated analytically. The designed dispersion flattened single mode fiber has dispersion and its slope respectively within [0.1741-0.9282] ps/km/nm and [(−0.011)-(0.0035)] ps/km/nm 2 in the spectral range of [1.46-1.625] µm (S+C+L bands) which are noticeably smaller than the reported value for ultralow dispersion slope fibers [5]. The designed fiber has ultrahigh effective area from 103.56 to 232.26 µm 2 in the above wavelength interval. Meanwhile, we show that there is a breakthrough in the quality factor of the ultra-low, ultra-flattened chromatic dispersion single mode optical fiber.

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“…For typical dispersion-shifted fibers (DSF) used for wavelength-division multiplexing (WDM) transmission in the vicinity of zero chromatic, dispersion wavelengths, non-linear effects, particularly four wave mixing (FWM), lead to signal degradation in the communication system. To minimize the four wave mixing effect, a large effective core area non-zero dispersion-shifted fiber (LEA-NZDSF) [1,2] and a non-zero dispersion flattened fiber (LEA-NZ-DFF) [3][4][5][6] were proposed. Besides, due to the modulation instability (MI) in WDM systems, LEA-NZ-DSF (DFF) fibers with negative dispersion in spectral range 1.53-1.56 µm are more convenient than the ones with positive chromatic dispersion [7].…”

Section: Introductionmentioning

confidence: 99%

Fiber Design with Effective Area over 100 μm2 for Long-haul Communication Lines

Белов¹

2001

Journal of Optical Communications

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Special dispersion-flattened fiber (DFF) profile structure with low non-linear properties for long-haul communication lines is proposed. A quasi-single-mode DFF design with effective core area larger than 100 µm 2 and low bending loss is presented. It is shown that basing on this structure and small variation of outer diameter along the fiber length, it is possible to fabricate a continuous dispersion varying fiber (DVF) with average zero dispersion (less than 0.02 ps/nm/km) in spectral range 1.53-1.56 µm. Besides, effects of system degradation, caused by the dual-mode regime of propagation are analysed. It is shown that effects of modal noise penalty and mode coupling in span length of ~100 km are neglegible.

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Dispersion flattened fiber with large-effective-core area more than 50 μm/sup 2/

Cited by 4 publications

References 0 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

Modified W-Type Single-Mode Optical Fiber Design With Ultra-Low, Flattened Chromatic Dispersion and Ultra-High Effective Area for High Bit Rate Long Haul Communications

Fiber Design with Effective Area over 100 μm2 for Long-haul Communication Lines

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