H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/06 (2006.01) H04B 10/04 (2006.01) H04B 10/148 (2006.01) H04B 10/155 (2006.01)
Patent
CA 2139092
An optical probe (23) receives a laser beam from a laser (21) and an input signal (I) with an input signal intensity and do input amplitude to produce a permeating beam having a beam intensity which is varied in response to the input signal intensity. A receiving device (27) receives an electric signal having a converted amplitude from a photoelectric converter (25) which converts the permeating beam into the electric signal. Supplied with the electric signal, a feedback control device (35) produces a feedback control signal. A laser control device (37) controls the laser in response to the feedback control signal so that the converted amplitude is approximately equal to a constant amplitude regardless of the input amplitude. The laser control device may control the laser so that the beam intensity is approximately equal to a constant beam intensity regardless of the input amplitude. A receiving system may comprise a different optical probe (63) which receives the permeating beam from the optical probe and an optical probe control device which receives the feedback control signal from the photoelectric converter supplied with a different permeating beam from the different optical probe. In this event, the optical probe control device controls the different optical probe so that a different beam intensity of the different permeating beam is approximately equal to a constant beam intensity regardless of the input amplitude.
Dennison Associates
Nec Tokin Corporation
LandOfFree
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