EP 1485976 A2 20041215 - ABSOLUTELY CALIBRATED PERIODIC FILTERS AND SOURCES
Title (en)
ABSOLUTELY CALIBRATED PERIODIC FILTERS AND SOURCES
Title (de)
ABSOLUT KALIBRIERTE PERIODISCHE FILTER UND QUELLEN
Title (fr)
SOURCES ET FILTRES PERIODIQUES A ETALONNAGE ABSOLU
Publication
Application
Priority
- CA 0300378 W 20030317
- CA 2411792 A 20021113
- US 36474202 P 20020318
- US 29300402 A 20021113
Abstract (en)
[origin: WO03079504A2] A method and a system for filtering a user light beam using a periodic filter having a frequency response stabilized at an absolutely calibrated value are provided. A primary light beam is generated by a tunable laser source and portions thereof are filtered by an absolute reference filter and the periodic filter. First the frequency of the laser source is automatically locked on the absolute reference filter, and then the frequency response of the periodic filter is locked relative to the frequency of the laser source. The frequency response of the periodic filter is therefore continuously maintained at the proper calibration. User input and output are provided to pass the user light beam through the stabilized periodic filter independently of the filter stabilization process. A broadband absolutely calibrated optical source and a method for absolutely calibrating an optical spectrum analysis device are also provided.
IPC 1-7
IPC 8 full level
H04B 10/155 (2006.01); H04B 10/158 (2006.01); H04B 10/50 (2013.01); H04B 10/572 (2013.01); G01J 3/26 (2006.01); G01J 3/28 (2006.01); G02B 6/12 (2006.01); G02B 6/42 (2006.01)
CPC (source: EP)
H04B 10/504 (2013.01); H04B 10/572 (2013.01); G01J 3/26 (2013.01); G01J 2003/2866 (2013.01); G02B 6/4202 (2013.01); G02B 2006/1215 (2013.01)
Citation (search report)
See references of WO 03079504A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 03079504 A2 20030925; WO 03079504 A3 20040219; AU 2003212159 A1 20030929; EP 1485976 A2 20041215
DOCDB simple family (application)
CA 0300378 W 20030317; AU 2003212159 A 20030317; EP 03707971 A 20030317