skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Cutoff-mesa isolated rib optical waveguide for III-V heterostructure photonic integrated circuits

Patent ·
OSTI ID:644420

A cutoff mesa rib waveguide provides single-mode performance regardless of any deep etches that might be used for electrical isolation between integrated electrooptic devices. Utilizing a principle of a cutoff slab waveguide with an asymmetrical refractive index profile, single mode operation is achievable with a wide range of rib widths and does not require demanding etch depth tolerances. This new waveguide design eliminates reflection effects, or self-interference, commonly seen when conventional rib waveguides are combined with deep isolation etches and thereby reduces high order mode propagation and crosstalk compared to the conventional rib waveguides. 7 figs.

Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corp., Albuquerque, NM (United States)
Patent Number(s):
US 5,745,630/A/
Application Number:
PAN: 8-603,841
OSTI ID:
644420
Resource Relation:
Other Information: PBD: 28 Apr 1998
Country of Publication:
United States
Language:
English