| 摘要 |
<p>A dual-band optical filter is disclosed which has two transmission bands. The first band is relatively narrow (about 1 nm) and encompases a wavelength of about 1550 nm, while the second band is relatively broad (greater than 50 nm) to transmit wavelengths in a range of 1300-1400 nm. Accordingly, the filter can be used in wavelength division multiplexed communication systems to simultaneously select a payload channel having a wavelength of approximately 1550 nm, and a 1310 nm service channel.</p> |
