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Title: Vertically-tapered optical waveguide and optical spot transformer formed therefrom

Abstract

An optical waveguide is disclosed in which a section of the waveguide core is vertically tapered during formation by spin coating by controlling the width of an underlying mesa structure. The optical waveguide can be formed from spin-coatable materials such as polymers, sol-gels and spin-on glasses. The vertically-tapered waveguide section can be used to provide a vertical expansion of an optical mode of light within the optical waveguide. A laterally-tapered section can be added adjacent to the vertically-tapered section to provide for a lateral expansion of the optical mode, thereby forming an optical spot-size transformer for efficient coupling of light between the optical waveguide and a single-mode optical fiber. Such a spot-size transformer can also be added to a III-V semiconductor device by post processing.

Inventors:
;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174964
Patent Number(s):
6768855
Application Number:
09/900,004
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Bakke, Thor, and Sullivan, Charles T. Vertically-tapered optical waveguide and optical spot transformer formed therefrom. United States: N. p., 2004. Web.
Bakke, Thor, & Sullivan, Charles T. Vertically-tapered optical waveguide and optical spot transformer formed therefrom. United States.
Bakke, Thor, and Sullivan, Charles T. Tue . "Vertically-tapered optical waveguide and optical spot transformer formed therefrom". United States. https://www.osti.gov/servlets/purl/1174964.
@article{osti_1174964,
title = {Vertically-tapered optical waveguide and optical spot transformer formed therefrom},
author = {Bakke, Thor and Sullivan, Charles T.},
abstractNote = {An optical waveguide is disclosed in which a section of the waveguide core is vertically tapered during formation by spin coating by controlling the width of an underlying mesa structure. The optical waveguide can be formed from spin-coatable materials such as polymers, sol-gels and spin-on glasses. The vertically-tapered waveguide section can be used to provide a vertical expansion of an optical mode of light within the optical waveguide. A laterally-tapered section can be added adjacent to the vertically-tapered section to provide for a lateral expansion of the optical mode, thereby forming an optical spot-size transformer for efficient coupling of light between the optical waveguide and a single-mode optical fiber. Such a spot-size transformer can also be added to a III-V semiconductor device by post processing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {7}
}

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Works referenced in this record:

Reduced coupling loss using a tapered-rib adiabatic-following fiber coupler
journal, August 1996


Polymeric optical mode converter for hybrid photonic integrated circuits
conference, April 1999


Advances in polymer integrated optics
journal, January 2000


Tapered polymer single-mode waveguides for mode transformation
journal, March 1999


Two-dimensional mode size transformation by Δn-controlled polymer waveguides
journal, April 1998


Analysis of mode size transformation with a tapered directional coupler
journal, January 1999


A review on fabrication technologies for the monolithic integration of tapers with III-V semiconductor devices
journal, January 1997


Improved coupling efficiency using /spl Delta/n-controlled polymer waveguides with two-dimensional spot-size transformation
journal, April 2000