Wavelength periodical filter

Details Wavelength periodical filter Wavelength periodical filter

2006-03-28

2006-03-28

Chang, Audrey (Department: 2872)

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

C359S494010, C356S453000

Reexamination Certificate

active

07019901

ABSTRACT:
Input light is split by a PBS into orthogonal polarized waves. One of the polarized waves is reflected by a mirror HR, and input to a 7λ/8 plate. The other is phase-controlled by a phase controller, and input to the 7λ/8 plate. The respective light beams to which a phase bias is applied by the 7λ/8 plate are input from a 2R mirror having reflectances that differ depending on a polarized wave to a GT resonator. The light beams output from the GT resonator again pass through the 7λ/8 plate, inversely travel the original optical path, and enter the PBS. Then, the light beams are output from an output 1 or 2 depending on a polarized wave.

REFERENCES:
patent: 6130971 (2000-10-01), Cao
patent: 6160932 (2000-12-01), Huang et al.
patent: 6205270 (2001-03-01), Cao
patent: 6560015 (2003-05-01), Cao
patent: 6590707 (2003-07-01), Weber
patent: 7-23205 (1995-04-01), None
patent: 7-32506 (1995-06-01), None
patent: 11-202125 (1999-07-01), None
Japanese Abstract, 7-23205, Apr. 25, 1995.
Japanese Abstract 7-32506, Jun. 15, 1995.
Japanese Abstract 11-202125, Jun. 30, 1999.

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