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Title: Tapered rib fiber coupler for semiconductor optical devices

Abstract

A monolithic tapered rib waveguide for transformation of the spot size of light between a semiconductor optical device and an optical fiber or from the fiber into the optical device. The tapered rib waveguide is integrated into the guiding rib atop a cutoff mesa type semiconductor device such as an expanded mode optical modulator or and expanded mode laser. The tapered rib acts to force the guided light down into the mesa structure of the semiconductor optical device instead of being bound to the interface between the bottom of the guiding rib and the top of the cutoff mesa. The single mode light leaving or entering the output face of the mesa structure then can couple to the optical fiber at coupling losses of 1.0 dB or less.

Inventors:
 [1];  [1]
  1. Albuquerque, NM
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
873722
Patent Number(s):
US 6229947
Assignee:
Sandia Corporation (Albuquerque, NM)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
tapered; rib; fiber; coupler; semiconductor; optical; devices; monolithic; waveguide; transformation; spot; size; light; device; integrated; guiding; atop; cutoff; mesa; type; expanded; mode; modulator; laser; force; guided; structure; bound; interface; bottom; top; single; leaving; entering; output; couple; coupling; losses; db; optical fiber; semiconductor device; single mode; optical device; mode optical; optical devices; rib waveguide; semiconductor optical; spot size; optical modulator; tapered rib; cutoff mesa; mode laser; type semiconductor; /385/

Citation Formats

Vawter, Gregory A, and Smith, Robert Edward. Tapered rib fiber coupler for semiconductor optical devices. United States: N. p., 2001. Web.
Vawter, Gregory A, & Smith, Robert Edward. Tapered rib fiber coupler for semiconductor optical devices. United States.
Vawter, Gregory A, and Smith, Robert Edward. Mon . "Tapered rib fiber coupler for semiconductor optical devices". United States. https://www.osti.gov/servlets/purl/873722.
@article{osti_873722,
title = {Tapered rib fiber coupler for semiconductor optical devices},
author = {Vawter, Gregory A and Smith, Robert Edward},
abstractNote = {A monolithic tapered rib waveguide for transformation of the spot size of light between a semiconductor optical device and an optical fiber or from the fiber into the optical device. The tapered rib waveguide is integrated into the guiding rib atop a cutoff mesa type semiconductor device such as an expanded mode optical modulator or and expanded mode laser. The tapered rib acts to force the guided light down into the mesa structure of the semiconductor optical device instead of being bound to the interface between the bottom of the guiding rib and the top of the cutoff mesa. The single mode light leaving or entering the output face of the mesa structure then can couple to the optical fiber at coupling losses of 1.0 dB or less.},
doi = {},
url = {https://www.osti.gov/biblio/873722}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

Patent:

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