We propose a method of multiplex imaging by a frequency-ramped laser-diode interferometer, Temporal carrier frequencies that are Proportional to the optical path differences between the reference arm and the object arms in the interferometer are introduced by a sawtooth-current modulation of the laser,diode, Electronic tuning can extract one interference beat signal from the multiplex ones produced by multiple object arms. Each. interference pattern is sampled in synchronism with the laser-diode current modulation by using an image-dissector camera. A source of cross talk between multiple images is discussed. The use of a laser-diode, with a wide frequeacy-modulation range will be promising for overcoming the problem.
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