Broadband Gain-Spectrum Measurement for Fiber Optical Parametric and Raman Amplifiers

Abstract

Abstract-We examine the use of a depolarized broadband probe to experimentally measure gain spectra of amplifiers comprising parametric and Raman gain. The suggested technique allows a quick and accurate characterization of gain spectra spanning more than 100 nm. We derive formulas for processing spectral data to address polarization dependent gain and idler generation, and consequently develop a measurement methodology for obtaining reliable results. We demonstrate the viability of this approach by performing an experimental comparison with results obtained using tunable lasers. We expect the technique described here to be useful for fiber optical parametric amplifier development and characterization.Index Terms-Gain measurement, Optical parametric amplifiers, Raman scattering, Broadband amplifiers.

Parametric Amplification and Wavelength Conversion in Dual-Core Highly Nonlinear Fibers

“…Inspecting Fig. 5, c), obtained by comparing the input and output spectrum [33], it can be seen that the maximum net gain of core 1 is G net1 = 4.9 dB and the maximum net gain of core 2 is G net2 = 8.9 dB. The difference in net gain is the result of difference in peak power between core 1 and 2, previously mentioned.…”

Phase-sensitive amplification of 11 WDM channels across bandwidth of 8 nm in a fibre optic parametric amplifier

“…Fig. 2 shows the PSA gain spectrum measured in absence of dispersion management using a broadband gain spectrum measurement technique [11] . At this stage the gain spectrum consists of a large number of peaks due to dispersion occurring between the copier and the PSA [6] .…”