Optical waveguide structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 9, 2007
Grant Date -
Apr 8, 2004
app pub date -
Jul 16, 2003
filing date -
Jul 17, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A waveguide structure according to the invention comprises a core layer (10), having a refractive index n.sub.core, and an array of rods (11) in the core layer having a refractive index n.sub.rods. The refractive indices satisfy the inequality: n.sub.rods>n.sub.core. In a planar waveguide structure buffer (12) and cladding (13) layers are included, having a refractive index n.sub.buffer and n.sub.cladding respectively. The refractive indices then satisfy the inequality: n.sub.rods>n.sub.core>n.sub.cladding and n.sub.buffer. This condition provides greater vertical confinement of the E-field of an optical signal passing through the waveguide. Furthermore, it allows waveguides to be formed of a glassy material having a similar refractive index and core dimensions to that of a fiber. A high refractive index contrast within the photonic crystal region is used while totally eliminating the need for mode conversion to launch light in and out of the waveguide.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully