Rapid prototyping of all-polymer AWGs for FBG readout using direct laser lithography

Abstract

This Letter describes the design, production, and characterization of a $1\times 2$ arrayed waveguide grating (AWG) for fiber Bragg grating (FBG) readout, centered at 850 nm, with a channel spacing of 1 nm. The employed manufacturing process is laser direct lithography, a low-cost, rapid-prototyping capable, maskless method that allows for short iteration cycles and simple migration of a successful design to mask-based high throughput methods. We also consider the achievable AWG performance if used for strain or temperature measurements with FBG sensors.

© 2018 Optical Society of America

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