| 摘要 |
<p>The apparatus (21) comprises a position tuned volume reflection grating (22), a lens (23), and a broadband mirror (24). An optical signal having a plurality of wavelengths is guided by optical fibre (25) onto lens (23). Lens (23) collimates the signal and focusses it onto filter (22). Grating (22) reflects back a first optical channel having a selected single wavelength back through lens (23) and into fibre (27). A second channel having the remaining wavelengths is transmitted by grating (22), and then reflected back through filter (22) and lens (23) by mirror (24) and into fibre (26). Fibres (25, 26, 27) are held in a fixed position relative to one another by fibre connector ferrule (28) in which they are mounted.</p> |
