Please enable JavaScript.
Coggle requires JavaScript to display documents.
MODULATION METHOD 1: INTENSITY MODULATED SENSORS (Various Probe…
MODULATION METHOD 1: INTENSITY MODULATED SENSORS
Modes of operation
Two modes of operation
Transmissive mode
Reflective mode
Basic Principle
Input source variation and component losses must be compensated
Pr dependent on probe configuration
Reflected Power, Pr = f
Basic setup:
Various Probe configuration
Single fiber
Fiber pair
Coaxial
Random Mix
Semicircular
Concentric circles
Typical Output Characteristic
)
Different configurations have different peak of responds
the position of peak response must be known before installation
Temperature sensor for triggering an alarm
Metallic cylinder
Filled with wax as medium
Change in Optical Power with d for Different Configuration:
Variation of Output Voltage with Temperature:
Transmissive mode IMOFS based on the microbending effect:
Loss-compensation scheme:
UMMI SHOBIRAH BINTI ALI
