Foil-integrated 2D Optical Strain Sensors

Integrated Optical Sensors

Since the start of the group IOMS in the mid-eighties of the last century its research had a strong focus on integrated optical (IO) sensors. A large number of different sensor device concepts, based on for example plasmonics [1] quenching of luminescence [1,2] and a large number of interferometric principles [3, 4] have been proposed and tested; part of the work has led to commercial follow up...

Optical filtering technologies for integrated fluorescence sensors.

Numerous approaches have been taken to miniaturizing fluorescence sensing, which is a key capability for micro-total-analysis systems. This critical, comprehensive review focuses on the optical hardware required to attenuate excitation light while transmitting fluorescence. It summarizes, evaluates, and compares the various technologies, including filtering approaches such as interference filte...

Dynamic Strain Measured by Mach-Zehnder Interferometric Optical Fiber Sensors

Optical fibers possess many advantages such as small size, light weight and immunity to electro-magnetic interference that meet the sensing requirements to a large extent. In this investigation, a Mach-Zehnder interferometric optical fiber sensor is used to measure the dynamic strain of a vibrating cantilever beam. A 3 × 3 coupler is employed to demodulate the phase shift of the Mach-Zehnder in...

Mechanical Property and Strain Transferring Mechanism in Optical Fiber Sensors

Strain measurement of moving periodic objects with optical sensors

Measuring the strain of an object provides information about axial loads which it is exposed to. In some applications, this information is wanted not from still-standing, but from linearly moving objects. Measuring the strain of V-belts, e.g., permits investigating the operational behavior of combustion engine belt drives. For this purpose, new noncontact measurement methods using optical senso...