| 摘要 |
<p>An optical fiber based ceilometer (100) for sensing cloud height is disclosed. In a first embodiment, the ceilometer (100) comprises a transmitter based upon optical fibers transmitting an output signal (120) to a target (100d). The transmitter (100a) includes a radiation source (102) generating the output signal (120) at a prescribed wavelength or wavelengths. A first waveguide (112) is receptive of the output signal (120) and guides the output signal (120) therealong. A receiver (100b) is receptive of a return signal (126) wherein the return signal (126) comprises the output signal (120) reflected or backscattered from the target (100d).</p> |
