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Proceedings Paper

Optimizing quasi-adiabaticity and its application in photonic lantern devices
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Paper Abstract

Photonic lanterns are novel photonic devices initially developed for an astro-photonics application, but later found immense potential in the field of space-division multiplexing and novel optical communication interconnects. They are adiabatically tapered structures, thus having large device lengths which scale quadratically with the number of cores. Adiabaticity is exploited to design a mode-selective photonic lantern. The Shortcuts to adiabaticity (STA) protocol is used to design an optimum quasi-adiabatic taper profile corresponding to a certain device length and a measure of adiabaticity. By homogenizing adiabaticity, a framework was developed to obtain an optimum taper profile for any required device length, which will have a corresponding measure of quasi-adiabaticity. This measure relates to the coupling losses suffered by the system digressing from absolute adibaticity. We have shown that the optimum taper profile significantly reduces the device length without compromising on adiabaticity. Photonic lanterns have also been examined for the generation of Orbital angular momentum modes in fibers. Here results for a three core photonic lantern structure for the generation of OAM1 mode have been discussed.

Paper Details

Date Published: 31 January 2020
PDF: 7 pages
Proc. SPIE 11309, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX, 1130906 (31 January 2020); doi: 10.1117/12.2548267
Show Author Affiliations
Sugeet Sunder, Indian Institute of Technology Delhi (India)
Anurag Sharma, Indian Institute of Technology Delhi (India)

Published in SPIE Proceedings Vol. 11309:
Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX
Guifang Li; Xiang Zhou, Editor(s)

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