Technology-oriented review and vision of 40-Gb/s-based optical transport networks

Mochida, Y.; Yamaguchi, Nori; Ishikawa, G.

doi:10.1109/jlt.2002.807778

Cited by 28 publications

(16 citation statements)

References 33 publications

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“…So the demand for transmission capacity and bandwidth are becoming more and more challenging to the carriers and service suppliers. Under the situation, with its huge bandwidth and excellent transmission performance, optical fiber is becoming the most favourable delivering media and laying more and more important role in information industry [2,3].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Dispersion Compensation in Long Haul Optical Fiber with DCF

Kumar¹,

Jaiswal²,

Kumar³

2013

IOSRJECE

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of Dispersion Compensation in Long Haul Optical Fiber with DCF

Kumar¹,

Jaiswal²,

Kumar³

2013

IOSRJECE

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“…The tremendous growth of the internet and data traffic has created an enormous demand for transmission bandwidth of dense wavelength-division-multiplexed (DWDM) optical communication systems [1,2]. This has spurred the development of compact fiber amplifiers with a very short gain medium length [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

67 cm long bismuth-based erbium doped fiber amplifier with wideband operation

et al. 2011

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In this paper, we demonstrate a wideband Bismuthbased erbium doped fiber amplifier (Bi-EDFA) using two pieces of bismuth-based erbium-doped fiber (Bi-EDF) with a total length of 67 cm as gain media in a double pass parallel configuration. Both Bi-EDFs have an erbium ion concentration of 6300 ppm. Compared to conventional silica-based erbiumdoped fiber amplifier (Si-EDFA) with the same amount of erbium ions, the Bi-EDFA provides a higher attainable gain as well as a greater amplification bandwidth, which ranging from 1525 to 1620 nm. The proposed Bi-EDFA achieved a wideband gain of around 18 dB within the wavelength region from 1530 to 1565 nm. The noise figures are maintained below 10 dB within a wide wavelength region from 1535 nm to 1620 nm.Gain, dB

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“…For example, at a transmission wavelength of 1550 nm, the EAM-induced chirp limits the transmission of 40 Gbit/s signals over standard singlemode fiber to distances as low as between 2 and 4 km. With appropriate dispersion management using either dispersion compensated fiber and/or dispersion shifted fiber this span can normally be extended into regions above 100 km when amplification becomes important [12]. Therefore the majority of the transmission experiments that incorporate EAMs utilise some kind of dispersion management to compensate loss due to large frequency chirp and this is considered to be the weakest point in the use of external EAMs [13].…”

Section: Introductionmentioning

confidence: 99%

Optimising negative chirp of an electroabsorption modulator for use in high‐speed optical networks

Jamro

Senior

2006

Trans Emerging Tel Tech

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SUMMARYOptical networks using singlemode fiber rely on negative chirp to improve the transmission performance. In particular for an electroabsorption modulator (EAM) optimal chirp control is required when it is used to achieve various network functions in high-speed optical networks. An approach to modelling the negative chirp for the EAM is presented that is suitable to apply to a cross-absorption modulation scheme. A novel feature of this modelling process is that it allows cubic polynomials to incorporate the nonlinear coefficients of chirp describing the a-parameter related to the nonlinear transmission coefficients. In addition to the twotone signal parameters (i.e. bias and modulating signal voltages), the model also includes wavelengthtemperature-dependent absorption variation and the effects associated with the length of the device. It therefore enables accurate determination for the values of the nonlinear coefficients of the chirp responsible for the negative chirp of an EAM. Using this model an optimised range of AE 0.5 is obtained for the nonlinear coefficients of the chirp to exhibit negative chirp for specific values of nonlinear transmission coefficients (within a range of À10 and 2) at a reverse bias voltage of less than 2 V. Since negative chirp optimisation of an EAM can minimise the unwanted effects of dispersion on a singlemode fiber in highspeed optical networks an improvement of performance without employing expensive dispersion compensation management techniques can be achieved.

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Technology-oriented review and vision of 40-Gb/s-based optical transport networks

Cited by 28 publications

References 33 publications

Performance Analysis of Dispersion Compensation in Long Haul Optical Fiber with DCF

Performance Analysis of Dispersion Compensation in Long Haul Optical Fiber with DCF

67 cm long bismuth-based erbium doped fiber amplifier with wideband operation

Optimising negative chirp of an electroabsorption modulator for use in high‐speed optical networks

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