Light Propagation in Microstructured Optical Fibers and Designing High Gain Fiber Amplifier

Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 166)


In this talk, the basic mechanism of light propagation in a triangular-lattice photonic crystal fiber (PCF) is first discussed with some key properties like, endlessly single-mode nature, controllable dispersion, high birefringence. Then a systematic study of a photonics crystal fiber design as a host of fiber amplifier is performed by varying all associated parameters towards utilizing controllable effective numerical aperture and tight modal confinement. A finite difference (FD) mode calculation analysis is used to determine the modal characteristics of the structure, which is then used to solve a standard rate equation. Results show that a spectral gain of the amplifier as high as 51 dB and that too over a short length ~2.5 m of the fiber is achievable. For field-deployment of the amplifier as inline component, the splicing/coupling loss (due to fundamental mode mismatch) of this all-fiber device is calculated. Notably, the coupling loss with standard telecom-grade SMF-28 fiber is reduced through an improved mode-matching of the structure-design. These results record a marked improvement in fiber amplifier performance in terms of realizing high-gain EDFA-PCF amplifiers.


PCFPhotonic Crystal Fiber Amplify Spontaneous Emission Fiber Amplifier Amplifier Gain Microstructured Optical Fiber 


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Copyright information

© Springer India 2015

Authors and Affiliations

  1. 1.Department of PhysicsIIT KharagpurKharagpurIndia

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