US Patent 6856731 Heat tunable optical devices with linearity compensation
Patent 6856731 was granted and assigned to Lucent Technologies Inc. on February, 2005 by the United States Patent and Trademark Office.
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Patent abstract
Wide range linear tuning of optical gratings is possible by selecting a thin film heater such that the temperature variation in heater's resistivity ρ matches the temperature variation in the heat transfer coefficient of air h. A tunable optical device, such as a fiber grating with such a grating heater, exhibits near linear tuning characteristics over a wide range of temperatures and tuning currents. The heater is useable in other heat tunable optical devices such as interferometers.
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Patent Inventor Names
John A Rogers0
Todd R. Salamon0
Date of Patent
February 15, 2005
0Patent Application Number
104109310
Date Filed
April 10, 2003
0Patent Primary Examiner
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US Patent 6856731 Heat tunable optical devices with linearity compensation
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