| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical signal distributing device which has a constant optical performance even though changes in ambient temp. and humidity or the like are present, in which the lowering and the degrading of the optical performance are small even under the environment having many dust, organic substance, corrosive gas, etc., which is strong against mechanical stresses such as vibration, shock and so forth, which has structure whose production facilities are of easy and of inexpensive. SOLUTION: This device houses plural light input-output parts 3 being terminals for both inputs and outputs of optical signals, an optical circuit part 6 branching the optical signal by reflecting it and plural guide optical fibers 8 connecting the plural light input-output parts 3 and the optical circuit part 6 in a cabinet 2 and allows the light signal inputted from one arbitrary light input-output part 3 to be almost evenly distributed and outputted to all other light input-output parts 3. In this case, the optical circuit part 6 uses an optical circuit having structure in which plural independently branched optical waveguides 22 are confluenced en bloc to one line of a main optical waveguide 21 and forms a reflection surface 4 at the end part of the main optical waveguide 21 and respectively connects guide optical fibers 8 to the plural independently branched optical waveguides 22 of the optical circuit. |
