## Abstract We discuss the writing of arcโinduced longโperiod fiber gratings to be used as optical filters in Er/Yb fiber lasers and for flattening the gain spectra of Erโdoped fiber amplifiers. A new approach for the fabrication of filters with complex profiles is also presented. ยฉ 2008 Wiley Peri
An efficient shooting method for fiber amplifiers and lasers
โ Scribed by Zohreh Lali-Dastjerdi; Feisal Kroushavi; Mohammad Hosein Rahmani
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 459 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0030-3992
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โฆ Synopsis
A simple shooting method is proposed for the design of distributed multi-pumped Raman fiber amplifiers (RFAs) and Yb-doped double-clad fiber lasers (DCFLs). Using the proposed method a distributed RFA with 10 pump sources and 1700 mW total input pump power is simulated and highpower Yb-doped DCFL rate equations are solved numerically. The numerical simulation results show that the proposed method has good convergence in the condition of increasing numbers and power of input pump sources.
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A new mode radius polynomial for Gaussian-mode profile approximaliun in singlemode actiire fiber is deriued The proposed polynomial offers accurate predictions oJ lhe perJormance of erbium-doped fiber amplljciery within the practical range of cutoff wauelengths (880-980 nm) and doping confinement fa
## Abstract We propose a new and efficient method to optimize the output gain profile based on the characteristics of a WDM pumped Raman gain spectra and the fact that different wavelength pumps have different impacts on the gain tilt. As an application, we optimize a 10 wavelength pumped fiber Ram
The shooting method is used in FE analysis for solving problems in inยฎnite domains. To restrain the instability of marching solutions caused by the position of the main diagonal of a stiness matrix in a matrix of the shooting method, a special retransformation of sets of the marching solutions is pr