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Metal and dielectric nanostructure-based optical circulators and isolators to direct light through optical circuits

Summary: A key step to harnessing the potential of optical integrated circuits is developing methods to reliably transmit light while preventing unwanted reflections. This technology proposes a method to construct optical isolators, which preferentially transmit light in one direction, and optical circulators, which direct light through only one of a number of ports, using nanostructures that enable light to flow in one direction more readily than in the opposite direction.

Technology Benefits: Smaller footprint than conventional isolators and circulators that use magnetic effects to direct lasers.Broadband operationCompatible with conventional CMOS processing techniques. Effective on wavelengths ranging from just a few microns (near-infrared) to over one millimeter (radio). Patent Information:Patent Pending (US 20160195676)Tech Ventures Reference: IR CU13369

Technology Application: Optical isolators, modulators, and polarization rotators for transmission of light through optical circuitsDetectors and perfect absorbers for integrated photonic circuitsHighly efficient on-chip nonlinear optical components Connector components for optical telecommunicationsHeat assisted magnetic recording

Detailed Technology Description: None

*Abstract: None

*Inquiry: Greg MaskelColumbia Technology VenturesTel: (212) 854-8444Email: TechTransfer@columbia.edu

*IR: CU13369

*Principal Investigator

*Publications: N. Yu, M. Kim, Z.Li. Controlling light propagation in optical waveguides using one dimensional phased antenna arrays. CLEO Conference Paper, June8-13, 2014Z. Li, N. Yu. Modulation of mid-infrared light using graphene-metal plasmonic antennas. Applied Physics Letters, Vol. 102, Issue 13, April 2013, pp. 131108.N. Yu, Q. Wang, C. Pflugl, L. Diehl, F. Capasso, T. Edamura, S. Furuta, M. Yamanishi, H. Kan. Semiconductor lasers with integrated plasmonic polarizers. Applied Physics Letters, Vol. 94, Issue 15, April 2009, pp. 151101.N. Yu, J. Fan, Q. Wang, C. Pflugl, L. Diehl, T. Edamura, M. Yamanishi, H. Kan, F. Capasso. Small-divergence semiconductor lasers by plasmonic collimation. Nature Photonics, Vol. 2, Issue 17, Sept. 2008, pp. 564-570.

Country/Region: USA

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