Measurement of fiber non-linearity based on four-wave mixing with an ASE source

Autor: Harith Ahmad, Abu Bakar Mohammad, O.M. Kharraz, David I. Forsyth
Rok vydání: 2016
Předmět:
Zdroj: Optical Fiber Technology. 32:23-29
ISSN: 1068-5200
DOI: 10.1016/j.yofte.2016.09.002
Popis: A new four-wave mixing scheme to practically measure the non-linear coefficient of fibers is introduced. A single erbium-doped fiber amplifier is used to create the two wavelengths for the four-wave mixing inputs, which are pre-spectrally sliced via fiber Bragg grating filters. The proposed scheme avoids the Brillouin backscattering, rendering this a more accurate method to determine fiber nonlinearities than conventional coherent FWM systems. Furthermore, the generated FWM seed beams are pure and ultra-narrow, and can therefore be treated as coherent light. Consequently, accurate degeneracy factor can also be taken into consideration.
Databáze: OpenAIRE