Multiple optic sensor system.

摘要

The system includes N optic sensors, each of which operates with received input light and providing output light having a characteristic corresp to a sensed parameter. A number, less than N+2, of devices is included each of which operates as a light source and as a light detector. E.g. one device can be used to transmit interrogation light to two of the sensors, with two other of the devices being used to receive output light from the interrogated sensors. An optic waveguide device is used for transmitting light between the sensors and the devices. At least one of the device is a light emitting diode and a hybrid device having a light source/detector pair sharing a common waveguide connection.