Pump to signal RIN transfer in Raman fiber amplifiers

Fludger, C.R.S.; Handerek, V.A.; Mears, R.J.

doi:10.1109/50.939794

Cited by 282 publications

(124 citation statements)

References 4 publications

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“…In previous works on Raman-assisted BOTDA [12]- [14], RIN transfer was identified as a major limitation in the performance. Here, we analyze more deeply the effect of RIN transfer on the performance of BOTDA, in particular with regards to the pump power and pumping scheme.…”

Section: Rin Transfermentioning

confidence: 99%

“…RIN transfer in the BOTDA setup is analyzed by employing the model developed in [12]. In our case, this model is used to quantify RIN transfer as a function of the pump power in a bidirectionally pumped scheme as a function of signal frequency (within the detection bandwidth, roughly 100 MHz), total pump power (from both ends), and pumping scheme.…”

Section: Rin Transfermentioning

confidence: 99%

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Raman-Assisted Brillouin Distributed Temperature Sensor Over 100 km Featuring 2 m Resolution and 1.2 $^{\circ}$C Uncertainty

Angulo-Vinuesa

Martín‐López

Nuño

et al. 2012

J. Lightwave Technol.

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Abstract-Raman assistance in distributed sensors based on Brillouin optical time-domain analysis can significantly extend the measurement distance. In this paper, we have developed a 2 m resolution long-range Brillouin distributed sensor that reaches 100 km using first-order Raman assistance. The estimated uncertainty in temperature discrimination is 1.2 C, even for the position of worst contrast. The parameters used in the experiment are supported by a simple analytical model of the required values, considering the main limitations of the setup.Index Terms-Brillouin scattering, distributed optic fiber sensor, distributed Raman amplification, Raman scattering, temperature sensor.

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Section: Rin Transfermentioning

confidence: 99%

Section: Rin Transfermentioning

confidence: 99%

Raman-Assisted Brillouin Distributed Temperature Sensor Over 100 km Featuring 2 m Resolution and 1.2 $^{\circ}$C Uncertainty

Angulo-Vinuesa

Martín‐López

Nuño

et al. 2012

J. Lightwave Technol.

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“…In this Letter we demonstrate that operating a Raman polarizer in the depleted regime may result in efficient suppression of the output RIN. Note that this type of RIN is induced by the PDG, and it should not be confused with the RIN that is transferred to the signal from the fluctuating pump beam, [2], [3]. From the practical point of view, fiber optic Raman polarizers differ from typical Raman amplifiers in that a peculiar type of gain fiber should be selected.…”

mentioning

confidence: 99%

Suppression of Relative Intensity Noise in Fiber-Optic Raman Polarizers

Козлов

Wabnitz

2011

IEEE Photon. Technol. Lett.

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Abstract-We propose a method for the suppression of relative intensity noise (RIN) at the output of a Raman polarizer, a special type of Raman amplifier that transforms an input weak beam of unpolarized light into an highly polarized amplified beam towards its output. We show that the RIN which is induced by polarization-dependent gain is suppressed whenever the Raman polarizer works in the depleted pump regime.

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“…Our setup is based on a counter-propagative pumping scheme is order to limit the temporal broadening of the pulse in the amplifier 37) . This also limits the relative noise intensity transfer from the pump to the amplified signal 38) and prevents the emergence of extreme events as well as effects of cross-phase modulation between the pump and the signal 39) . This requirement of counter-propagative configuration makes unfortunately the device unpractical for bidirectionnal operation 24,25,40) .…”

Section: Methodsmentioning

confidence: 99%