Apparatus for measuring state of polarization of a lightwave
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Apr 24, 2003
app pub date -
Oct 23, 2002
filing date -
Oct 24, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Apparatus for measuring state of polarization of an input light beam comprises a linear polarizing element (10), e.g. a Glan-Taylor prism, an input fiber and lens (22,24) for directing the input light beam to the linear polarizing element (10), an output stage (26A-26D, 30A-30D, 32A-32D, 34) for receiving the light beam leaving the polarizing element, and at least two waveplates (12A, 12B; 12B, 12C) disposed adjacent each other between the input fiber/lens and the linear polarizing element. Each waveplate has its fast axis oriented at a different predetermined azimuthal angle with respect to the incident light beam. The arrangement is such that first and second portions of the input light beam pass through the linear polarizing element and the two waveplates, respectively, and a third portion of the light beam passes through the linear polarizing element without passing through a waveplate. The output stage determines power levels of the three portions of the light beam, respectively, and derives the state of polarization therefrom.
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