A device that transduces optical control signals to pneumatic control pressures was assembled and tested. This photofluidic interface uses no electronic components and requires no electrical power. The interface employs the photoacoustic effect and fluidic signal processing techniques. The pressure output from the interface can be controlled by modulating the input optical signal in any one of four different ways (amplitude modulation, frequency modulation, pulse width modulation, and gate width modulation). Results of performance tests are reported. There is also a discussion of the physical parameters involved in the conversion of optical signals to fluidic signals.

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