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Lossless High-Index Contrast Distributed Bragg Reflector

Detailed Technology Description: Cornell has developed a novel, high-aspect ratio, compact and extremely efficient Distributed Bragg Reflector (DBR).

Others: Patent: 7,113,673

*Abstract: Cornell has developed a novel, high-aspect ratio, compact and extremely efficient Distributed Bragg Reflector (DBR). In Cornell's DBR, sections of high-index waveguide are separated by a low-index region bridged only by a very thin high-index section, which we refer to as a wire lens. The thickness of the wire lens is critical and at certain thicknesses, losses almost disappear while reflectivity remains at 100%. The length of these DBRs is on the order of 1 mm! Reflectivity of 100% can be maintained for a large range of wavelengths while limiting transmittivity losses to near zero.

*Licensing: Patrick Govangpjg26@cornell.edu(607) 254-2330

Country/Region: USA

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