Temperature and pressure monitors utilizing interference...

Details Temperature and pressure monitors utilizing interference... Temperature and pressure monitors utilizing interference...

A - Human Necessities

61

B

73/55

A61B 5/02 (2006.01) A61B 5/0215 (2006.01) G01D 5/26 (2006.01) G01K 11/12 (2006.01)

Patent

CA 1320355

Temperature and Pressure Monitors Utilizing Interference Filters Abstract of the Disclosure An interference edge filter [11] is mounted on the end of an optical fiber [10] to provide a sensor for pressure or temperature. The filter is formed such that the transition slope [21] of the filter curve [20] will move to the left or right depending upon the changes in the parameter being monitored. The shift in the position of the slope [21] of the edge filter curve [20] is detected by passing the reflected light through an interference bandpass filter [381 having an edge slope [50] inter- secting the transition slope [21] and measuring the intensity of the light passing the bandpass filter.

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