EP 1987410 A2 20081105 - OPTICAL SYSTEM WITH COHERENT FEEDBACK
Title (en)
OPTICAL SYSTEM WITH COHERENT FEEDBACK
Title (de)
OPTISCHES SYSTEM MIT KOHÄRENTEM FEEDBACK
Title (fr)
SYSTÈME OPTIQUE AVEC RÉTROACTION COHÉRENTE
Publication
Application
Priority
- IB 2006004287 W 20061208
- US 74842205 P 20051208
Abstract (en)
[origin: WO2007141598A2] An optical measurement system sensitive to light field amplitude is disclosed. The system uses an interferometer while a feedback loop maintains, at a low level, the light intensity exiting from at least on optical output of the interferometer. Shot noise of a detector placed at the output of the interferometer is thus reduced, enabling high speed and high accuracy measurement without requiring is stronger light source. The measurement system may be used in optical computing.
IPC 8 full level
G03H 1/10 (2006.01)
CPC (source: EP)
G06E 3/005 (2013.01)
Citation (search report)
See references of WO 2007141598A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007141598 A2 20071213; WO 2007141598 A3 20090820; CN 101632048 A 20100120; EP 1987410 A2 20081105
DOCDB simple family (application)
IB 2006004287 W 20061208; CN 200680052579 A 20061208; EP 06851253 A 20061208