Optical wavelength interrogator

Details Optical wavelength interrogator Optical wavelength interrogator

2007-01-02

2007-01-02

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S227140, C250S227230, C356S478000, C385S012000

Reexamination Certificate

active

11348002

ABSTRACT:
An optical wavelength readout system for application in optical sensing systems is disclosed. The system includes a Master unit including a wavelength swept optical source for launching light into a string of optical sensors, and a detection and processing unit for detecting and processing the light emitted by the source. The system also includes a Slave unit including a light coupling device for coupling light from the light source into the string of sensors and for coupling light reflected from the string of sensors to a detection and processing unit arranged to detect and process the reflected light. The Master unit includes a wavelength reference unit adapted to make a reference signal available to other parts of the sensing system. The reference signal represents a generally exact relation between the wavelength of the light emitted from the source and time.

REFERENCES:
patent: 6097487 (2000-08-01), Kringlebotn et al.
patent: 6449047 (2002-09-01), Bao et al.
patent: 6680472 (2004-01-01), Thingbø et al.
patent: 2005/0068525 (2005-03-01), Taverner et al.
patent: 2 409 517 (2005-06-01), None
patent: WO 2005/024349 (2005-03-01), None
UK Search Report, GB Application No. 0520616.4, dated Dec. 5, 2005.

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