| 摘要 |
An optical fiber filter device comprises: a first fiber pigtail assembly (110) having a first optical fiber (111), a second fiber pigtail assembly (120) having a second optical fiber (121), a first optical filtering element (114) and a second optical filtering element (124). The first optical filtering element is arranged between a first port (113) of the first optical fiber and a second port (123) of the second optical fiber and is inclined at an angle to an optical axis of the first optical fiber such that a light component within a first wavelength range emitted from the first port is transmitted through the first optical filtering element and enters the second optical fiber via the second port, and a light component within a second wavelength range emitted from the first port is reflected by the first optical filtering element to form a reflected light. The second optical filtering element is arranged such that the reflected light returns to the first optical fiber via the first port after it has been reflected by the second optical filtering element and again by the first optical filtering element 1. |
