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Proceedings Paper

Er+3-doped fiber amplifier in triangular PCF host revisited: higher gain, low splice loss
Author(s): Kajal Mondal; Partha Roy Chaudhuri
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Paper Abstract

With a view to enhancing the performance of all-fiber amplifier using Er+3-doped triangular-lattice photonic crystal fiber (PCF), we performed a detailed study of the amplifying characteristics of the PCF host by varying all associated parameters towards achieving high gain and lower optimum doped fiber length (minimum length required to get the maximum level of gain). A finite difference (FD) mode- convergence analysis is used to determine the modal propagation characteristics in the structure, which is then used to solve a standard propagation and population rate equation. Our results show that a spectral gain of the amplifier as high as 51 dB and that too over a short length ~2.4 m of the active fiber is achievable by optimizing the gain dependent parameters and the transverse geometry of the fiber. Aimed at field-deployment of the amplifier as inline component, we optimize splicing/coupling loss (considering the mismatch of fundamental modes only) of this all-fiber device. Notably, the splice loss with standard telecom-grade SMF-28 fiber is minimized through an improved mode-matching of the design. These results are new in fiber amplifier research and would make useful contribution to realize high-performance PCF-based amplifiers and devices.

Paper Details

Date Published: 23 August 2011
PDF: 9 pages
Proc. SPIE 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics, 81730V (23 August 2011); doi: 10.1117/12.897889
Show Author Affiliations
Kajal Mondal, Indian Institute of Technology Kharagpur (India)
Partha Roy Chaudhuri, Indian Institute of Technology Kharagpur (India)

Published in SPIE Proceedings Vol. 8173:
Photonics 2010: Tenth International Conference on Fiber Optics and Photonics
Sunil K. Khijwania; Banshi D. Gupta; Bishnu P. Pal; Anurag Sharma, Editor(s)

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