Open AccessPreform fabrication and fiber drawing of 300 nm broadband Cr-doped fibers
Author(s) -
Yi-Chung Huang,
Jau-Sheng Wang,
Yu-Kuan Lu,
Wen-Kuei Liu,
KuoChung Huang,
ShengLung Huang,
Wood-Hi Cheng
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.014382
Subject(s) - materials science , cladding (metalworking) , optics , fabrication , optical fiber , doping , broadband , hard clad silica optical fiber , optoelectronics , core (optical fiber) , plastic clad silica fiber , fiber , all silica fiber , dispersion shifted fiber , composite material , fiber optic sensor , medicine , physics , alternative medicine , pathology
The fabrication of a Cr-doped fiber using a drawing-tower method with Cr:YAG as the core of the preform is presented. The Cr-doped YAG preform was fabricated by a rod-in-tube method. By employing a negative pressure control in drawing-tower technique on the YAG preform, the Cr-doped fibers with a better core circularity and uniformity, and good interface between core and cladding were fabricated. The amplified spontaneous emission spectrum showed a broadband emission of 1.2 to 1.6 mum with the output power density about a few nW/nm. The results indicate that this new Cr-doped fiber may be used as a broadband fiber amplifier to cover the bandwidths in the whole 1.3-1.6 mum range of low-loss and lowdispersion windows of silica fibers.