Patent ID: 7653318

Claim:
A device for optically transmitting a high bandwidth electromagnetic signal with extremely high dynamic range and sensitivity, comprising: an optical transmitter which modulates a phase of an optical carrier using the high bandwidth electromagnetic signal to form a modulated optical carrier connected to the optical transmitter; a transmission medium through which an output of said transmitter is propagated; and a receiver connected to the transmission medium which accepts said modulated optical carrier and demodulates phase information to reproduce the high bandwidth electromagnetic signal in a new location, wherein said receiver comprises, a photonic phase-locked loop, which receives said modulated optical carrier, performs phase demodulation and generates a high dynamic range electromagnetic signal proportional to the original high bandwidth electromagnetic signal in the transmitter, wherein said photonic phase-locked loop comprises, a phase modulator, which modulates an optical phase of an optical signal operating as a local oscillator, a photodetector device, which produces an electrical output over a given bandwidth in proportion to irradiance of an optical input over a given range of wavelengths that is incident to said device, and a loop filter which ensures high gain and stability of the photonic phase-locked loop.