| http://www.w3.org/ns/prov#value | - FIG. 4A is a circuit diagram of an optical fiber switch circuit having one input (M=1) composed by connecting in series n switching members 61-63 the 1???2 optical fiber switch, 61 the 2???4 optical fiber switch 62, and the 4???8 optical fiber switch 63 respectively shown in FIG. 3A through FIG. 3C. FIGS. 4A through 4 individually illustrate the shifted positions of the drive members of the respec
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