Investigation of coupling of a laser diode to photonic crystal fiber via hyperbolic microlens on the fiber tip by ABCD matrix formalism

Anup Karak; Dipankar Kundu; Sumanta Mukhopadhyay; Somenath Sarkar

doi:10.1117/1.OE.54.8.086102

18 August 2015 Investigation of coupling of a laser diode to photonic crystal fiber via hyperbolic microlens on the fiber tip by ABCD matrix formalism

Anup Karak, Dipankar Kundu, Sumanta Mukhopadhyay, Somenath Sarkar

Author Affiliations +

Optical Engineering, Vol. 54, Issue 8, 086102 (August 2015). https://doi.org/10.1117/1.OE.54.8.086102

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.

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Anup Karak, Dipankar Kundu, Sumanta Mukhopadhyay, and Somenath Sarkar "Investigation of coupling of a laser diode to photonic crystal fiber via hyperbolic microlens on the fiber tip by ABCD matrix formalism," Optical Engineering 54(8), 086102 (18 August 2015). https://doi.org/10.1117/1.OE.54.8.086102

Published: 18 August 2015

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