Gain characteristics of a frequency nondegenerate phase-sensitive fiber-optic parametric amplifier with phase self-stabilized input

Tang, Rongnian; Lasri, J.; Devgan, P.; Grigoryan, V.S.; Kumar, Prem; Vasilyev, Michael

doi:10.1364/opex.13.010483

Cited by 115 publications

(61 citation statements)

References 22 publications

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“…In the 2P-PSA case the gain drops towards the centre of the bandwidth but this is to be expected based on the average pump wavelength being slightly higher than the ZDW (the selection of wavelengths was primarily limited by the grating filters that were available for our experiments). Note that the maximal gain and attenuation are equal and opposite, as expected theoretically over the full 20 nm operating bandwidth assessed, in accordance with theory [6]. This was possible in part due to the use of a PM-EDFA which ensured that the waves are always co-polarised at the PSA input.…”

Section: Introductionsupporting

confidence: 87%

See 1 more Smart Citation

Experimental Investigation of Wide Bandwidth Single and Dual Pump non-Degenerate Phase Sensitive Amplifiers

Kakande

Parmigiani

Ibsen

et al. 2010

Optical Fiber Communication Conference

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Section: Introductionsupporting

confidence: 87%

“…2. The solid curve shows the characteristic gain ripple when the dispersive elements prior to the input of the PSA (HNLF2) are not properly compensated, causing a wavelength dependent relative phase modulation [6]. The dotted curve shows a close to optimally chromatic dispersion compensated case (via optimization of the DCF length).…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Wide Bandwidth Single and Dual Pump non-Degenerate Phase Sensitive Amplifiers

Kakande

Parmigiani

Ibsen

et al. 2010

Optical Fiber Communication Conference

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“…levels (solid curve in Fig. 2) the gain curve is sinusoidal with relative signal input phase as expected from theory 9 . As the signal power increases, the curves accumulate a skew, with the gain peak seemingly detuned in phase from the central phase position.…”

Section: Introductionsupporting

confidence: 74%

Saturation effects in degenerate phase sensitive fiber optic parametric amplifiers

Kakande

Parmigiani

Slavı́k

et al. 2010

36th European Conference and Exhibition on Optical Communication

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“…It is therefore important to conceive a method to find the gain evolution along parametric amplifiers. The easiest way would be analyzing the basic scalar equations that describe the parametric amplification in terms of powers of pump, signal, and idler, as well as the relative phase difference between these waves [4]. However, the validity of these equations depends on assumptions that do not necessarily hold under experimental conditions.…”

mentioning

confidence: 99%

“…The ZDW of HNLF2 is reported as 1550 5 nm by the manufacturer. Invoking the standard scalar theory for parametric amplification [4], the PS-FOPA gain along the fiber can be written as:…”

mentioning

confidence: 99%

Power evolution along phase-sensitive parametric amplifiers: an experimental survey

et al. 2014

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We propose and experimentally demonstrate a method based on Brillouin optical time-domain analysis to measure the longitudinal signal power distribution along phase-sensitive fiber-optical parametric amplifiers (PS-FOPAs). Experimental results show that the amplification of a PS-FOPA could go through different longitudinal profiles and yet finish with the same overall gain. This behavior is in sheer contrast with theoretical expectations, according to which longitudinal gain distribution should follow certain profiles determined by the initial relative phase difference but can never end up in the same overall gain. The gap between theory and experiment only becomes evident when the pump wavelength is within the fluctuation range of the zero dispersion wavelength (ZDW) A focus has been increasingly placed on fiber parametric devices by the research community [1,2]. In particular, phase-sensitive fiber-optical parametric amplifiers (PSFOPAs) have received special attention for their distinguished noise figure which allows for a significant increase in channel capacity [1]. Since parametric amplification takes place while the signal propagates along the fiber, PS-FOPAs should be evidently considered as distributed elements. Still, in almost all previous experimental studies, the spectral characteristics of PS-FOPAs and their gain are measured solely at the output end of the fiber [2], neglecting the distributed nature of the amplifier in favor of a description of a lumped amplification process. In a lumped model, a PS-FOPA of length L is seen as an amplifier of gain G, whereas it is in fact made of an infinite number of cascaded amplifiers, each one corresponding to a PS-FOPA of an infinitesimal length dL. Although the overall gain of the amplifier is of foremost importance, the gain evolution along the fiber also matters to determine the amplifier performance. Actually, reordering the stages in cascaded amplifiers can severely affect the performance of the overall amplification process, in particular its noise characteristics, even though the total gain is the same [3]. It is therefore important to conceive a method to find the gain evolution along parametric amplifiers. The easiest way would be analyzing the basic scalar equations that describe the parametric amplification in terms of powers of pump, signal, and idler, as well as the relative phase difference between these waves [4]. However, the validity of these equations depends on assumptions that do not necessarily hold under experimental conditions. The limitations of the existing theory accentuate the necessity to conceive an experimental setup extracting the power distribution along fiber-optic parametric amplifiers. Depending on the phase difference between pump, signal, and idler at input of a PS-FOPA, different possible combinations of amplification (energy transfer from pump to signal/idler) and/or de-amplification (energy transfer from signal/idler to the pump) processes can occur along the fiber. These profiles may not be discernible from each oth...

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Gain characteristics of a frequency nondegenerate phase-sensitive fiber-optic parametric amplifier with phase self-stabilized input

Cited by 115 publications

References 22 publications

Experimental Investigation of Wide Bandwidth Single and Dual Pump non-Degenerate Phase Sensitive Amplifiers

Experimental Investigation of Wide Bandwidth Single and Dual Pump non-Degenerate Phase Sensitive Amplifiers

Saturation effects in degenerate phase sensitive fiber optic parametric amplifiers

Power evolution along phase-sensitive parametric amplifiers: an experimental survey

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