FAN OUT CONNECTOR

摘要

PURPOSE:To superpose or separate a test optical signal on or from a transmission optical signal in each coated optical fiber by providing a multilayered film filter which superposes and separates the test optical signal on and from the transmission optical signal. CONSTITUTION:The transmission optical signal is transmitted to a coated optical fiber 1 or is transmitted reverse on the same route, and the test optical signal is transmitted to a coated optical fiber 1' through a test optical signal port 5 or is transmitted reverse on the same route. A multilayered film filter 6 having a wavelength selectivity is used for superposition and separation between the optical signal used for transmission and that used for test. The transmission optical signal is transmitted from the coated optical fiber 1 to a coated optical fiber 1'' or from the coated optical fiber 1'' to the coated optical fiber 1 through the multilayered film filter 6 and the test optical signal has a wavelength different from that of the transmission optical signal and is reflected by the multilayered film filter 6 to change the direction and is transmitted from the coated optical fiber 1' to the coated optical fiber 1'' or from the coated optical fiber 1'' to the coated optical fiber 1'. Thus, the test optical signal is superposed or separated.