FBG Sensors, os11000 pages

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Fiber Bragg Grating os1100

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Applications

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• Fundamental optical element for fiber

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optic sensors for strain, temperature, dis-

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placement, pressure, and acceleration.

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Measurement of strain on a structure's

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surface.

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• Measurement of temperature.

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• Measurement of strain inside of a compos-

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ite or laminate structure.

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• Proof of concept for FBG sensor applica-

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tions.

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• Experimental mechanics evaluations

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requiring many sensors.

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Features

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Optional FC/APC connector and loose buf-

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fer tube for ease of handling.

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Clearly marked FBG location.

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Non metallic construction.

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Advantages of FBG Sensor Technology

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Longevity - resistant to lightning, corro-

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sion, EMI.

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Passive - no spark hazard, no power at

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sensor.

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Multiplexing - many sensors, few cables,

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long range.

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Versatility - small size, sense many proper-

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ties with one system.

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Installation - weld, glue, embed, connect

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in series.

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Calibration - none required by user

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Ruggedness - fatigue over 100 million

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cycles, wide temperature range.

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Description

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The osl 100 Fiber Bragg Grating (FBG) is designed for use in fiber optic sensing applications. It

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is a single FBG centered in a two meter length of polyimide coated optical fiber. It may be used

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individually or can be spliced into an array of many FBGs.

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Fiber Bragg gratings are the fundamental elements upon which most fiber optic sensors are

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based. An FBG is an invisible reflector inside the core of the fiberthat is setto a specific wavelength

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of light. When the fiber where the FBG is located is exposed to strain or temperature, the FBG's

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"center wavelength" shifts to a higher or lower wavelength. The direction and magnitude of the

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shift is proportional to the change in strain or temperature. osllOO's are available in dozens

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of distinct center wavelengths. Using different wavelengths allows multiplexing of dozens of

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FBGs on a single fiber.

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osl 100 single FBG with optional FC/APC connector

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osl 100's are used in applications ranging from basic experiments to construction of complex

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transducers containing one or more FBGs. The polyimide coating provides excellent transfer of

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strain through the fiber coating to the FBG in the fiber core. Polyimide also performs well over

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a wide temperature range.

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One or two FC/APC connectors, and loose buffer tube protection, are available as packaging

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options.

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