Frequency-multiplex optical transmission apparatus
AssigneeSumitomo Electric Industries, Ltd.
InventorMitsutoshi Imada
Life of this patent
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Abstract
A frequency-multiplex optical transmission apparatus for carrying out frequency-multiplex optical transmission by supplying an analog-frequency-multiplexed RF input signal to a laser diode. In the apparatus, part of the RF input signal taken out by a splitter is detected by a power detector. In response to an output signal of the power detector, an indicator driver causes an indicator to indicate a modulation signal level for the laser diode. The level of the RF input signal is adjustable by an attenuator while observing the indication state of the indicator.
Claims14
An apparatus for carrying out frequency-multiplex optical transmissions, comprising:
- means for supplying an analog-frequency-multiplexed RF input signal to a laser diode;
- split means for taking out part of the RF input signal before being supplied to said laser diode;
- detection means for detecting the RF input signal obtained from the split means;
- an indicator;
- and
- drive means for causing the indicator to indicate a modulation signal level of the laser diode on the basis of a modulation signal level of said RF input signal obtained from an output signal of the detection means.
Dependencies are inferred from the claim text.