The integration of silica and polymer waveguide devices for ROADM applications

Fujita, J.; Gerhardt, R.; Izuhara, Tomoyuki; Lin, Wenhua; Wei, Hongzhen; Grek, B.

doi:10.1117/12.877604

Cited by 5 publications

(1 citation statement)

References 22 publications

(37 reference statements)

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“…Low-index contrast silica waveguides, due to their low propagation loss, efficient fiber-to-chip coupling, low material birefringence (<10 -4 ), low cost, and high temperature stability have been utilized in planar lightwave circuits (PLCs) [1]. The key drawback of the components based on silica waveguides is their large footprint, where the large radius of waveguide bend has been identified as one of the main obstacles.…”

Section: Introductionmentioning

confidence: 99%

Low-index-contrast waveguide bend based on truncated Eaton lens implemented by graded photonic crystals

Badri

Gilarlue

2019

J. Opt. Soc. Am. B

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Low-index contrast waveguides such as silica waveguides are indispensable part of passive integrated optical components. Reducing the bending radius of silica waveguides with low bend loss is vital in miniaturizing silica planar lightwave circuits. The Eaton lens is a gradient index lens that can bend parallel light rays by 90°, 180°, or 360°. We present a lowloss and compact 90° waveguide bend with a radius of 9µm designed by truncating the Eaton lens. The performance of the designed bend, implemented by graded photonic crystal, was evaluated by full-wave two-dimensional finite element method. The average bend loss in the C-band is 0.9dB while the average bend loss for the wavelength range of 1260-1675nm is 1.05dB. The proposed design strategy can be applied to other low-index contrast waveguides.

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Section: Introductionmentioning

confidence: 99%