Highly Efficient Mode Converter for Coupling Light into Wide Slot Photonic Crystal Waveguide

Abstract

We design, fabricate and experimentally demonstrate a highly efficient adiabatic mode converter for coupling light into a silicon slot waveguide with a slot width as large as 320nm. This strip-to-slot mode converter is optimized to provide a measured insertion loss as low as 0.08dB. Our mode converter provides 0.1dB lower loss compared to a conventional V-shape mode converter. This mode converter is used to couple light into and out of a 320nm slot photonic crystal waveguide, and it is experimentally shown to improve the coupling efficiency up to 3.5dB compared to the V-shape mode converter, over the slow-light wavelength region.

arXiv comment13 pages, 7 figures

References in corpus (3)

• Wide optical spectrum range, sub-volt, compact modulator based on electro-optic polymer refilled silicon slot photonic crystal waveguide
• High Dynamic Range Electric Field Sensor for Electromagnetic Pulse Detection
• UV imprinting and aligned ink-jet printing for multi-layer patterning of electro-optic polymer modulators

Cited by in corpus (5)

• Graphene photodetector integrated on a photonic crystal defect waveguide
• Coupling silica waveguides to photonic crystal waveguides through multilayered Luneburg lens
• Antenna-coupled silicon-organic hybrid integrated photonic crystal modulator for broadband electromagnetic wave detection
• Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer
• Miniaturized Low-power Electro-optic Modulator Based on Silicon Integrated Nanophotonics and Organic Polymers