LAMBDASCOPE’s FT-400 Temperature Sensor is designed based on the intrinsic properties of fiber optic glass thermal expansion. Its operating principle is super simple. We have developed a highly reliable and high precision algorithm to detect and analyze the optical cable length as a function of thermal expansion which resulted in a unique, very cost effective and versatile fiber optic temperature measurement solution.

High Precision Fiber Optic Temperature Sensor Datasheet
Performance Report in Heated Oil Test (220 deg. C)

The product offers the highest accuracy in the market with 0.1mm or better in fiber length measurement. It works on both single mode and multimode fibers.

Here's a short demo on how it works:

High Accuracy Fiber Length Meter Datasheet


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