Optical source peak wavelength control using a wavelength feedback network

Optical source peak wavelength control using a wavelength feedback network

A graded index of refraction (GRIN) lens/diffraction grating combination is used to monitor the output source peak wavelength of an optical source. As the output wavelength of a source varies, different detectors are activated. The output of these detectors is used to control a thermoelectric cooler...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LARGE, SCOTT F, METCALF, BRUCE D
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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Beschreibung
Zusammenfassung:A graded index of refraction (GRIN) lens/diffraction grating combination is used to monitor the output source peak wavelength of an optical source. As the output wavelength of a source varies, different detectors are activated. The output of these detectors is used to control a thermoelectric cooler which will raise or lower the temperature of the source so as to drive the output wavelength toward the desired peak output wavelength.