| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical circuit module which consists of a small number of components, can be made small-sized and has its coupling efficiency easily optimized, can suppress its material cost and manufacture low, has less propagation loss than before, and is free of the wavelength dependency of transmission attenuation characteristics. SOLUTION: A two-core ferrule 5 constituted by uniting end parts of cores 4a and 4b of two optical fiber cords 3a and 3b in parallel, a collimator lens 7 which is arranged on the end surface of the two-core ferrule 5 while having its optical axis aligned with the cores, and an optical multiplexing demultiplexing filter 11 which is arranged at the focus of the collimator lens 7 on the opposite side from the two-core ferrule 5 are mounted in one body; and signal light with specific wavelength projected from one end surface of the core 4a is passed through the collimator lens 7, selectively reflected by the optical multiplexing and demultiplexing filter 11, and made incident on the end surface of the other core 4b through the collimator lens 7. |
