Optimizing quasi-adiabaticity and its application in photonic lantern devices

Sugeet Sunder; Anurag Sharma

doi:10.1117/12.2548267

31 January 2020 Optimizing quasi-adiabaticity and its application in photonic lantern devices

Sugeet Sunder, Anurag Sharma

Proceedings Volume 11309, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX; 1130906 (2020) https://doi.org/10.1117/12.2548267
Event: SPIE OPTO, 2020, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

Sugeet Sunder and Anurag Sharma "Optimizing quasi-adiabaticity and its application in photonic lantern devices", Proc. SPIE 11309, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IX, 1130906 (31 January 2020); https://doi.org/10.1117/12.2548267

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