US PATENT SUBCLASS 359 / 239
.~.~ Modulator output feedback to modulator

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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

237  DF  OPTICAL MODULATOR {3}
238  DF  .~ Light wave temporal modulation (e.g., frequency, amplitude, etc.) {3}
239.~.~ Modulator output feedback to modulator

DEFINITION

Classification: 359/239

Modulator output feedback to modulator:

(under subclass 238) Subject matter wherein the light beam output from the modulator is fed back into the modulator input.