Efficient distortion-free amplification of 1.3 μm femtosecond pulses in a Pr3+-doped fluoride fiber amplifier

Peter, D.; Hodel, W.; Weber, H. P.

doi:10.1016/0030-4018(96)00168-x

Cited by 10 publications

(2 citation statements)

References 22 publications

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“…Although adiabatic amplif ication (small gain) gives high-quality pulses, the resulting energy gains are small and the amplif ier length must increase exponentially with input pulse width to satisfy the adiabatic condition. This diff iculty can be overcome by use of the chirped pulse amplification technique 5,6 in which f irst an input pulse is stretched by a dispersive delay line to ensure linear amplification and then the stretched and amplified pulse is recompressed through another delay line that has the opposite sign of dispersion. Because the nonlinearities in the amplif ier are suppressed, efficient and distortionless pulse amplif ication can be achieved.…”

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confidence: 99%

Amplification and compression of ultrashort fundamental solitons in an erbium-doped nonlinear amplifying fiber loop mirror

Cao

Wai

2003

Opt. Lett.

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A nonlinear amplifying loop mirror constructed from erbium-doped fiber is proposed for simultaneous amplification and compression of ultrashort fundamental solitons. Numerical simulations show that, unlike conventional erbium-doped fiber amplifiers in which nonlinear effects lead to serious degradation of pulse quality, the proposed device performs efficient high-quality amplification and compression of ultrashort fundamental solitons while it almost completely preserves the soliton nature of the input pulses. Moreover, the performance of the device is insensitive to small variations in the loop length and in the power-splitting ratio of the coupler.

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confidence: 99%

Amplification and compression of ultrashort fundamental solitons in an erbium-doped nonlinear amplifying fiber loop mirror

Cao

Wai

2003

Opt. Lett.

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“…the resulting energy gains are small [5], [6] and the amplifier length must increase exponentially with the input pulsewidth in order to satisfy the adiabatic condition. The difficulty can be overcome using the chirped pulse amplification (CPA) technique [7]- [11] in which an input pulse is first stretched by a dispersive delay line to ensure "linear" amplification and then the stretched and amplified pulse is recompressed through another delay line having the opposite sign of dispersion. Since the nonlinearities in the amplifier are suppressed, efficient and distortionless amplification of femtosecond pulses can be achieved.…”

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confidence: 99%

Simultaneous amplification and compression of ultrashort solitons in an erbium-doped nonlinear amplifying fiber loop mirror

Wai

Cao

2003

IEEE J. Quantum Electron.

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A simple technique for simultaneous amplification and compression of ultrashort fundamental solitons is proposed. It is based on an erbium-doped nonlinear amplifying fiber loop mirror. Numerical simulations show that, unlike conventional erbium-doped fiber amplifiers in which nonlinear effects lead to serious degradation of pulse quality, the proposed device performs efficient high-quality amplification and compression of ultrashort solitons while nearly preserving the soliton nature of the input pulses. We have also studied the effects of loop characteristics, nonsoliton input pulses, and higher order fiber effects on the device performance and show that the proposed scheme is fairly insensitive to small variations in both the loop and input pulse parameters. Index Terms-Optical fiber amplifiers, optical pulse amplification, optical pulse compression, optical solitons, optical switching. I. INTRODUCTION U LTRASHORT pulse amplification is required in many fields such as ultrafast spectroscopy, optical signal processing, and soliton-based communication systems, etc., because of the relatively low output power levels of commonly used short pulse sources, such as mode-locked semiconductor and fiber lasers. Erbium-doped fiber amplifiers (EDFAs) are widely used for pulse amplification owing to their broad bandwidths (50 nm), high gains (40-dB), and high pulse-saturation energies (1 J). For most applications of ultrashort pulses, the pulse quality is a key factor. It is, therefore, not sufficient to achieve a high gain, but the amplification process must also preserve the pulse quality, which is especially important for soliton-based communication systems. However, distortionless amplification of ultrashort soliton pulses in EDFAs is difficult if fiber nonlinearities such as self-phase modulation (SPM) and Raman self-scattering (RSS) are large [1]-[5]. These nonlinear effects lead to undesirable pulse shaping and serious degradation of the pulse quality. Although adiabatic amplification (small gain) gives high-quality pulses,

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Fiber amplifiers

Agrawal¹

2021

Applications of Nonlinear Fiber Optics

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Efficient distortion-free amplification of 1.3 μm femtosecond pulses in a Pr3+-doped fluoride fiber amplifier

Cited by 10 publications

References 22 publications

Amplification and compression of ultrashort fundamental solitons in an erbium-doped nonlinear amplifying fiber loop mirror

Amplification and compression of ultrashort fundamental solitons in an erbium-doped nonlinear amplifying fiber loop mirror

Simultaneous amplification and compression of ultrashort solitons in an erbium-doped nonlinear amplifying fiber loop mirror

Fiber amplifiers

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