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Optical Engineering

Investigation of coupling of a laser diode to photonic crystal fiber via hyperbolic microlens on the fiber tip by ABCD matrix formalism
Author(s): Anup Karak; Dipankar Kundu; Sumanta Mukhopadhyay; Somenath Sarkar
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Paper Abstract

A simple and accurate theoretical investigation is presented, based on a novel, effective, and straightforward 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. By tailoring different parameters, such as the air-filling factor and lattice constant of the PCF, the criteria for achieving maximum coupling are predicted and reported for two different light wavelengths of practical interest. It is observed that such fiber parameters play a crucial role in predicting the optimum focal length of HML for a particular wavelength. The formulation should find application in the design of HML, for achieving a long working distance between the laser source facet and the fiber tip.

Paper Details

Date Published: 18 August 2015
PDF: 7 pages
Opt. Eng. 54(8) 086102 doi: 10.1117/1.OE.54.8.086102
Published in: Optical Engineering Volume 54, Issue 8
Show Author Affiliations
Anup Karak, Univ. of Calcutta (India)
Dipankar Kundu, Univ. of Calcutta (India)
St. Thomas’ College of Engineering and Technology (India)
Sumanta Mukhopadhyay, Univ. of Calcutta (India)
St. Paul's Cathedral Mission College (India)
Somenath Sarkar, Univ. of Calcutta (India)

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