| 摘要 |
PURPOSE:To effectively perform the evaluation of an optical circuit including a light wave guide, by mounting a means for effectively connecting oscillation light to the optical circuit, a means for detecting the transmitted light of the optical circuit and a means for detecting light laterally scattered in the optical circuit. CONSTITUTION:Oscillation light 2 with a wavelength of 1.06mum from a Nd:YAG laser 1 is guided to a single mode silica fiber 4 through an optical coupling system 3 and induction Raman scattered light 5 obtained from the other end of the fiber is guided to an optical circuit 7 having a light wave guide through the other one light coupling system 6. The transmitted light 8 emitted from said optical circuit 7 is spectrally divided by a spectrometer 9 and detected by a Ge light detector 10. The scattered light 11 generated in the optical circuit 7 is divided spectrally by an interference filter 12 and detected by the other one Ge light detector 13. By synthesizing the result in each wavelength by this method, the characteristic of the light wave guide can be evaluated. |
