Transducer apparatus utilizing fiber optics for data transmission

A transducer adapted to receive an input optical signal and responsive to a predetermined parameter which is to be measured, for generating an output optical signal in a dependence to said parameter, said transducer comprising:

• a first optical coupling means having a first end for receiving said input optical signal and a second end for transmitting said input optical signal;
• first conversion means optically coupled to said second end of said first optical coupling means for receiving said input optical signal and for generating an electrical power signal;
• driver means powered by said electrical power signal and responsive to said predetermined parameter for generating an electrical drive signal representative of said predetermined parameter, said driver means including:
• oscillator circuit means having a selectively variable frequency of oscillation for producing an oscillatory signal;
• frequency varying means responsive to said predetermined parameter for selectively varying the frequency of oscillation of said oscillator circuit means to selectively vary said oscillatory signal in dependence on said parameter;
• and
• output means connected to receive said oscillatory signal for providing said electrical drive signal in dependence on said oscillatory signal;
• second conversion means connected to receive said electrical drive signal for generating said output optical signal in dependence on said electrical drive signal;
• and
• second optical coupling means having a first end for receiving said output optical signal and a second end for transmitting said output optical signal.