| 摘要 |
THE PRESENT INVENTION RELATES TO A VARIABLE OPTICAL MULTIPLEXER FOR EXTRACTING A SINGLE OR PLURALITY OF CHANNELS FROM INCOMING SIGNALS AND INSERTING A SINGLE OR PLURALITY OF CHANNELS INTO OUTGOING SIGNALS. THE VARIABLE OPTICAL MULTIPLEXER INCLUDES TWO VARIABLE FIBRE OPTIC COUPLERS (VFOC) HAVING CONTROL MEANS FOR VARIABLE CONTROL OF SPLITTING RATIO FOR SPLITTING AND COMBINING CHANNELS AND AN OPTICAL TRANSMISSION FILTER FOR REFLECTING THE REQUIRED CHANNEL.FIGURE 1
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