Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal

US8351742B2 · kind B2 · utility

Assignee

• The Trustees of Columbia University in the City of New York · US

Inventors

• Chee Wei Wong · New York, US
• Rohit Chatterjee · Kanchinakote, IN
• Xiaochun Li · San Jose, US
• Xugang Zhang · Shorewood, US

Key dates

• Filing date: Oct 15, 2010
• Grant date: Jan 8, 2013
• Expiry date: Dec 7, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/29338
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Systems and methods for sensing properties of a workpiece and embedding a photonic sensor in metal are disclosed herein. In some embodiments, systems for sensing properties of a workpiece include an optical input, a photonic device, an optical detector, and a digital processing device. The optical input provides an optical signal at an output of the optical input. The photonic device is coupled to the workpiece and to the output of the optical input. The photonic device generates an output signal in response to the optical signal, wherein at least one of an intensity of the output signal and a wavelength of the output signal depends on at least one of thermal characteristics and mechanical characteristics of the workpiece. The optical detector receives the output signal from the photonic device and is configured to generate a corresponding electronic signal. The digital processing device is coupled to the optical detector and determines at least one of the thermal characteristics and mechanical the characteristics of the workpiece based on the electronic signal.