| 摘要 |
A high reflection isolation device includes a metal tube (1), a glass tube (2) enclosed by the metal tube, a dual fiber pigtail (DFP) (3) having a first fiber (30) and a second fiber (32), a GRIN lens (4) engaging with the metal tube via an adhesive (7), a first filter (5) mounted on the GRIN lens, and a second filter (6) mounted between the dual fiber pigtail and the GRIN lens. Light input from the first fiber passes through the GRIN lens and encounters the first filter. The first filter passes only a first wavelength of light and reflects all others, which pass back through the GRIN lens to the second filter. The second filter passes only a second wavelength of light, which is transmitted into the second fiber.
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