Title:
光学フィルタ
Document Type and Number:
Japanese Patent JP4398148
Kind Code:
B2
Abstract:
An optical interference filter ( 2 ) is provided by a substrate ( 1 ) in which is formed a plurality of parallel slots so as to define layers (slots and substrate laminae) of alternating refractive index. As shown, the filter comprises a central Fabry-Perot resonator slot cavity ( 3 ) between two mirror groups ( 4, 5 ) of alternating slots and substrate laminae, and is coupled to optical fibers ( 7 ) accommodated in V-grooves ( 6 ) on either side. For tuning, one mirror group ( 5 ) may be movable in the direction of arrow (A), or, where the central resonator is provided by substrate material, by altering its temperature. One or more further Fabry-Perot filters may be formed in the substrate and coupled to the filter ( 2 ). The invention encompasses non-resonating filters.
Inventors:
Louise, Keith Loader
Smith, gilbert william
McKnee, Mark Edward
Smith, gilbert william
McKnee, Mark Edward
Application Number:
JP2002546893A
Publication Date:
January 13, 2010
Filing Date:
November 23, 2001
Export Citation:
Assignee:
Kinetic Limited
International Classes:
G02B5/28; G02B6/34; G02B26/00; G02B26/02; G02F1/025; G02F1/21
Domestic Patent References:
| JP11095184A | ||||
| JP11133365A | ||||
| JP11119186A |
Foreign References:
| WO2000045201A1 |
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Katsuma Osaki
Makoto Ono
Katsuma Osaki