All Optical Fiber Continuous Wave Supercontinuun Sources for fibre sensing proposes
Author(s): Sonia Martín-López1, Pedro Corredera1, Laura Abrardi1, Ana Carrasco-Sanz1, Felix Rodriguez-Barrios1, M.Luisa Hernanz1 and Miguel González-Herráez1
Affiliation(s): 1. Instituto de Fisica Aplicada, CSIC. 2. Departamento de Electrónica, UAH
Topic: 5. Optoelectronic Sensor-Technologies and Light Sources
A supercontinuum light source is a wideband source obtained as the result of the broadening of a spectrally narrow pump source in a nonlinear medium. The high spectral brightness, large spectral width, tailored wavelength band of emission, and coherence make supercontinuun sources (SC) very attractive for photonics applications. The SCs generated with continuous wave (CW) pumps have the additional property that they present much higher spectral power density than the ones generated with pulsed pumps. We present three different supercontinuun sources tailored with conventional telecommunications fibers in order to obtain high power emission in the 1300 and 1550 nm spectral regions. We show that the spectral width, spectral shape and brightness of the supercontinua can be designed by a precise selection of the dispersion proprieties of the fibers used. This properties convert this type of sources as a very interesting candidate to be using in fiber sensing and photonics applications, for instance to avoid the need of amplification in the interrogation of remote Bragg gratings or to improve the resolution and dynamic range of optical coherence tomography setups.