Extending the Gain Bandwidth of Combined Raman-Parametric Fiber Amplifiers Using Highly Nonlinear Fiber

Ummy, Muhammad A.; Arend, Mark; Leng, Lufeng; Madamopoulos, Nicholas; Dorsinville, R.

doi:10.1109/jlt.2008.2004948

Cited by 27 publications

(10 citation statements)

References 23 publications

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“…RA-FOPA cascade is used as inline amplifier and dispersion compensation has been combined in Raman amplifying fiber medium itself. Use of single pump parametric amplifiers for broadband amplification has been reported previously [12,19,26]. But with increased number of channels in DWDM systems, high pump powers of the order of 200 mW are required to overcome the cross talk due to parametric amplification [12].…”

Section: Resultsmentioning

confidence: 99%

“…A net gain enhancement of 34 dB has been achieved over conventional RA-FOPA for the same parametric pump powers using the proposed HFRPA. Ummy et al [19] demonstrated an extended flat gain of 15 dB with gain ripple of 5 dB, using combined Raman and parametric interaction in HNLF. Peiris et al [20] demonstrated hybrid Raman-Optical Parametric Amplifier (HROPA) in tandem configuration for extended bandwidth, with gain more than 20 dB and extended gain bandwidth of 170 nm.…”

Section: Advances In Optical Technologiesmentioning

confidence: 99%

See 1 more Smart Citation

Novel Raman Parametric Hybrid L-Band Amplifier with Four-Wave Mixing Suppressed Pump for Terabits Dense Wavelength Division Multiplexed Systems

Kaur

Sharma

Kaur

2016

Advances in Optical Technologies

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We demonstrate improved performance of parametric amplifier cascaded with Raman amplifier for gain of 54.79 dB. We report amplification of L-band using 100 × 10 Gbps Dense Wavelength Division Multiplexed (DWDM) system with 25 GHz channel spacing. The gain achieved is the highest reported so far with gain flatness of 3.38 dB without using any gain flattening technique. Hybrid modulated parametric pump is used for suppressing four-wave mixing (FWM) around pump region, resulting in improvement of gain flatness by 2.42 dB. The peak to peak variation of gain is achieved less than 1.6 dB. DWDM system with 16-channel, 25 GHz spaced system has been analyzed thoroughly with hybrid modulated parametric pump amplified Raman-FOPA amplifier for gain flatness and improved performance in terms of BER and -factor.

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Section: Resultsmentioning

confidence: 99%

Section: Advances In Optical Technologiesmentioning

confidence: 99%

Novel Raman Parametric Hybrid L-Band Amplifier with Four-Wave Mixing Suppressed Pump for Terabits Dense Wavelength Division Multiplexed Systems

Kaur

Sharma

Kaur

2016

Advances in Optical Technologies

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“…The approximate solution of Eq. (1) was obtained by an iteration process using the fourth-order Runge-Kutta method [17].…”

Section: Mathematical Model and Methodologymentioning

confidence: 99%

Suppression of WDM four-wave mixing crosstalk in fibre optic parametric amplifier using Raman-assisted pumping

Redyuk¹,

Stephens²,

Doran³

2015

Opt. Express

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Abstract:We perform an extensive numerical analysis of Raman-Assisted Fibre Optical Parametric Amplifiers (RA-FOPA) in the context of WDM QPSK signal amplification. A detailed comparison of the conventional FOPA and RA-FOPA is reported and the important advantages offered by the Raman pumping are clarified. We assess the impact of pump power ratios, channel count, and highly nonlinear fibre (HNLF) length on crosstalk levels at different amplifier gains. We show that for a fixed 200 m HNLF length, maximum crosstalk can be reduced by up to 7 dB when amplifying 10x58Gb/s QPSK signals at 20 dB net-gain using a Raman pump of 37 dBm and parametric pump of 28.5 dBm in comparison to a standard single-pump FOPA using 33.4 dBm pump power. It is shown that a significant reduction in four-wave mixing crosstalk is also obtained by reducing the highly nonlinear fibre interaction length. The trend is shown to be generally valid for different net-gain conditions and channel grid size. Crosstalk levels are additionally shown to strongly depend on the Raman/parametric pump power ratio, with a reduction in crosstalk seen for increased Raman pump power contribution.

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“…The HOA, which cover the low loss region of the optical fiber such as 1480 nm, 1550 nm and 1580 nm [1]. Many HOAs have been proposed to increase gain bandwidth product of the system which are responsible for increase in capacity [7,8]. With second approach, the bit rate per channel of wavelength division multiplexed systems can be increased to 40 Gbps or more, by using high-speed electronic circuits and optical time-division multiplexing (OTDM) technologies.…”

Section: Introductionmentioning

confidence: 99%

Multistage gain-flattened hybrid optical amplifier at reduced wavelength spacing

Singh¹,

Kaler²

2014

Optik

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Extending the Gain Bandwidth of Combined Raman-Parametric Fiber Amplifiers Using Highly Nonlinear Fiber

Cited by 27 publications

References 23 publications

Novel Raman Parametric Hybrid L-Band Amplifier with Four-Wave Mixing Suppressed Pump for Terabits Dense Wavelength Division Multiplexed Systems

Novel Raman Parametric Hybrid L-Band Amplifier with Four-Wave Mixing Suppressed Pump for Terabits Dense Wavelength Division Multiplexed Systems

Suppression of WDM four-wave mixing crosstalk in fibre optic parametric amplifier using Raman-assisted pumping

Multistage gain-flattened hybrid optical amplifier at reduced wavelength spacing

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