BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective optical fiber address detector using an optical fiber time delay line on which a metal thin film is deposited. It is about a manufacturing method.;The conventional optical fiber address detector capable of processing ultra-high speed broadband signals is a transmissive structure that separates an input optical address signal into an input coupler, and then sends each address bit '1' to a corresponding delay line to recombine the output coupler. The address is detected as a result.;That is, if the input address signal matches the address of the detector, the cross-correlation pulses appear at the combiner output when the autocorrelation pulses have different addresses.;The optical fiber address detector of the present invention is constructed by connecting optical fiber delay lines in which a metal thin film is deposited on one end to an optical fiber coupler so that an input address optical signal is separated by an input optical fiber coupler and reflected from a thin film at the end of the optical fiber delay line. Since the recombination is performed by the optical fiber combiner, the same address detection characteristic can be obtained even if the number of optical fiber combiners required for the conventional optical fiber address detector configuration is reduced to 1/2.
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