Active optical coupler for optical data link communication system
First Claim
1. An active optical coupler for use in an optical data link communication system, said coupler comprising:
- a multi channel coupler means having a plurality of input channels for receiving an original optical signal, a separation means for separating said original optical signal into a predetermined number of separated optical signals, and a plurality of output channels for distributing said separated optical signals; and
an amplification means for amplifying one of said separated optical signals to produce an amplified optical signal and supplying said amplified optical signal to one of said input channels.
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Abstract
An active optical coupler for use in an optical data link communication system includes a multi channel coupler having a plurality of input channel fibers for receiving an original optical signal, an optical branch separating the original optical signal into a predetermined number of separated optical signals, and a plurality of output channel fibers for distributing the separated optical signals. An amplification circuit is connected to one of the output channel fibers which distributes the separated optical signal having a lowest power for amplifying this separated optical signal to produce an amplified optical signal. This amplified optical signal is supplied to any other of the input channels other than that which the original optical signal is input to and then distributed to the output channels again.
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Citations
9 Claims
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1. An active optical coupler for use in an optical data link communication system, said coupler comprising:
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a multi channel coupler means having a plurality of input channels for receiving an original optical signal, a separation means for separating said original optical signal into a predetermined number of separated optical signals, and a plurality of output channels for distributing said separated optical signals; and an amplification means for amplifying one of said separated optical signals to produce an amplified optical signal and supplying said amplified optical signal to one of said input channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An active optical coupler for use in an optical data link communication system, said coupler comprising:
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a multi-channel coupler means having a plurality of input channels for receiving an original optical signal, a separation means for separating said original optical signal into a predetermined number of separated optical signals, and a plurality of output channels for distributing said separated optical signals; and an amplification means for amplifying one of said separated optical signals to produce an amplified optical signal and supplying said amplified optical signal to one of said input channels, wherein said amplification means comprises; a first photoelectric conversion means for converting said one of said separated optical signals to an electric signal; an amplifying means for amplifying said electric signal to produce an amplified electric signal; and a second photoelectric conversion means for converting said amplified electric signal to said amplified optical signal, wherein said amplification means further comprises; an input control means connected between said first photoelectric conversion means and said amplifying means for controlling said electric signal to be within a voltage range at which said amplifying means linearly operates; and a driving means connected between said amplifying means and said second photoelectric conversion means for current amplification based on the input electric signal and driving said second photoelectric conversion means to produce said amplified optical signal.
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Specification