Optical filter

Details Optical filter Optical filter

1996-02-07

1996-11-26

Ullah, Akm E.

Optical waveguides

Polarization without modulation

G02B 600

Patent

active

055794203

ABSTRACT:
An optical filter including first, second, and third birefringent elements arranged in this order on an optical path leading from an input port to an output port, and a device for changing a vector of birefringence in the second birefringent element. The first birefringent element splits an input beam into first and second beams having planes of polarization perpendicular to each other to output the first and second beams. The second birefringent element receives the first and second beams to output third and fourth beams converted in polarized condition from the first and second beams, respectively. The third birefringent element receives the third and fourth beams, splits the third beam into fifth and sixth beams having planes of polarization perpendicular to each other to output the fifth and sixth beams, and splits the fourth beam into seventh and eighth beams having planes of polarization perpendicular to each other to output the seventh and eighth beams.

REFERENCES:
patent: 4197008 (1980-04-01), Pinnow et al.
patent: 4548478 (1985-10-01), Shirasaki
patent: 4575193 (1986-03-01), Greivenkamp, Jr.
patent: 5355249 (1994-10-01), Souda
patent: 5402509 (1995-03-01), Fukushima
patent: 5446807 (1995-08-01), Baran et al.
patent: 5513194 (1996-04-01), Tamura et al.
patent: 5537432 (1996-07-01), Mehuys et al.

Affiliated with

Also associated with

Rating

Optical filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1979769