Journal ArticleDOI
Fiber Raman gain amplifier performance study using simple coupled-mode analysis
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TLDR
In this paper, a premier report based on coupledmode analysis (CMA) is presented to analyze and predict the performance of fiber Raman gain amplifier (FRGA) for the first time, as per our knowledge, using coaxial structure consisting of step-index profiles in both inner and outer cores in terms of effective area.Abstract:
The propagation characteristics of doped fiber amplifier have, already, been analyzed using simple coupled-mode analysis (CMA), which steers the interests to apply this simple theory to study the amplification performance of fiber Raman gain amplifier (FRGA) But such study is yet to be done for FRGA In this paper, a premier report based on CMA is presented to analyze and predict the performance of FRGA for first time, as per our knowledge, using coaxial structure consisting of step-index profiles in both inner and outer cores in terms of effective area, Raman gain coefficient, and effective Raman gain coefficient In our investigation, we use single pump to compute and compare our results with the results obtained by involved matrix method and a fairly excellent match over a wide region of frequency shift is reportedread more
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Book ChapterDOI
An Introduction to Fiber Optics
TL;DR: This chapter is a starting point to look around and see where you’re going before you dig into details, and put fiber optics and communications into context and show how they go together.
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Investigation of coupling of a laser diode to photonic crystal fiber via hyperbolic microlens on the fiber tip by ABCD matrix formalism
TL;DR: In this paper, a simple and accurate theoretical investigation is presented, based on a novel, effective, and straight-forward ABCD matrix technique, in relation to estimation of optimum coupling efficiency between the laser diode and the photonic crystal fiber (PCF) with a hyperbolic microlens (HML) on its tip.
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Coupling of a laser diode to single mode circular core trapezoidal index fiber via hyperbolic microlens on the fiber tip and construction of empirical relations to determine the optimum back focal length
TL;DR: In this article, the fiber tip based hyperbolic microlens coupling efficiency of circular core trapezoidal index single mode fiber and a laser diode was theoretically studied and the corresponding analytical expressions were formulated considering ABCD matrix for hyper bolic micro-lens following paraxial approximation and also Gaussian field distributions are considered for both the source and the fiber.
References
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Journal ArticleDOI
A simple and effective method to analyze the propagation characteristics of nonlinear single mode fiber using Chebyshev method
TL;DR: This article proposes and develops a simple iterative method based on Chebyshev technique to investigate propagation characteristics of single mode nonlinear fibers and shows that the results match with available rigorous results reliably.
Journal ArticleDOI
Analytical expressions for group delay in the far field from an optical fiber having an arbitrary index profile
TL;DR: In this paper, a general and efficient model for optical fibers with a few modes and arbitrary index profiles is established, which yields a solution of the vectorial wave equation and analytical expressions for the group delay and the far field.
Journal ArticleDOI
Propagation characteristics of single-mode optical fibers with arbitrary complex index profiles: a direct numerical approach
R. Sing,Sunanda,E.K. Sharma +2 more
TL;DR: In this article, a rapidly converging numerical procedure for the evaluation of the propagation characteristics of a single-mode optical fiber with an arbitrary complex refractive index profile was presented, and applied to a fiber with a complex step index profile.
Journal ArticleDOI
Step index profile coming out as the best choice for the inner core in fiber Raman gain amplifier under fixed phase matching condition
TL;DR: In this article, a comparative study on fiber Raman gain amplifier performance for coaxial fiber structure having trapezoidal index profile with dispersion shifted criteria in inner core is presented to search for the suitable refractive index profile where single pump wavelength is used.
Journal ArticleDOI
Study of the amplification characteristics of a coaxial EDF with varying coupling conditions
TL;DR: In this article, a coaxial erbium doped fiber (EDF) designed to show inherent gain flattening for one of its propagating modes in general supports two or more modes with different gains.