| 摘要 |
PURPOSE:To facilitate assembly and to attain cost reduction, simplification, and size reduction by adhering an optical fiber bundle to one surface of a triangular prism and a right-angled prism and a pentagonal prism equipped with a total reflecting mirror to the other surface across an interference film filter. CONSTITUTION:Double light which is inputted from an input-side optical fiber 12 and has wavelength lambda1 and lambda2 is made into a parallel light beam through a rod lens 15, and the light beam is passed through the triangular prism 11, a transparent glass plate 18, and the pentagonal prism 21 and changed indirection by the right-angled prism 22; and light of wavelength lambda2 is transmitted through an interference filter 19 and outputted to an optical fiber 13. Light of wavelength lambda2 reflected by a filter 19 is reflected by the total reflecting mirror 23, filtered by the interference filter 20 which reflects the light of wavelength lambda1 and transmits the light of wavelength lambda2, and outputted to a fiber 14. Therefore, an optical axis adjustment is made at one position, so the assembly is easy and optical fibers are centralized at one side of the component, so arrangement on a fitting substrate is facilitated. |
