Title: Ultralow loss cavities and waveguides scattering loss cancellation

Abstract

A waveguide system includes a first waveguide having surface roughness along at least one surface and a second waveguide substantially identical to the first waveguide and having substantially identical surface roughness along a corresponding side. The first and second waveguides are separated from each other by a predermined distance and are configured to receive respective first and second light signals having antisymmetric modes. The predetermined distance between the first and second waveguide tends to cause cancellation of at least far-field polarization radiation emanating from the first and second waveguides and resulting from surface roughness.

Inventors:

Rakich, Peter T

Issue Date:

2014-01-07

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1113794

Patent Number(s):

8625939

Application Number:

13/306,408

Assignee:

Sandia Corporation (Albuquerque, NM)

Patent Classifications (CPCs):

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

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G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G02B6/122 - Basic optical elements, e.g. light-guiding paths
G02B6/1225 - {comprising photonic band-gap structures or photonic lattices}
G02B6/12007 - {forming wavelength selective elements, e.g. multiplexer, demultiplexer}

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DOE Contract Number:  

AC04-94AL85000

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Nov 29

Country of Publication:

United States

Language:

English

Subject:

42 ENGINEERING