Optical Strain Gage (OS3100)

The OS3100 Optical Strain Gage is a surface mount strain gage based on Micron Optics' patented micro opto-mechanical technology. To ensure long-term stability by design, this patch type sensor uses neither epoxies nor other glues as part of its structure and has been tested to withstand over 100 million fatigue cycles of +/- 2000 μstrain.
The OS3100 provides an ideal alternative to electrical strain sensors, featuring advantages such as high accuracy, long-term stability, premium performance under harsh environmental conditions, and world record resistance to mechanical fatigue. Installation is easy as the OS3100 can be spot-welded or epoxied to most materials using conventional techniques.

Applications
Industrial grade strain gages for automotive, aircraft/aerospace, structural, geotechnical, energy and medical equipment monitoring applications
Core building block for higher level sensors such as Accelerometers, Inclinometers, Displacement, Pressure, Load Sensors and many other transducers
Environmental & Mechanical
Gage Factor: ~1.2 pm/μe
Active Gage Length: 22 mm
Operating Temperature Range: -40 to +120C (150 C short term)
Strain Limits: +/-2500 μm/m
Fatigue Life: > 100x106 cycles, +/-2000 μm/m
Dimensions: 36 mm x 8 mm x 1 mm
Pigtail Length: 1 m (+/-10 cm)
Weight: 2.6 g
Fiber Type: SMF28-C
Fiber Original Coating: Polyimide
Buffer Tube: 0.9mm Fiberglass Braid
Connectorization: None
Optical
Center Wavelength: 1465 to 1617nm available (+/- 1 nm)
Peak Reflectivity: >70%
FWHM (-3dB point): 0.25 nm (+/-0.05nm; Apodized grating)
Isolation: >12dB (@ +/-0.4 nm around center wavelength)