| 摘要 |
<p>Routing optical signals through an optical rotating joint 2 is done by using a first optical circulator 64 on a first side of the optical rotating joint 2 to receive an optical signal and direct the optical signal onward to a first side of the optical rotating joint 2, and using a second optical circulator 93 on a second side of the optical rotating joint 2 to receive the optical signal from the second side of the optical rotating joint 2 and direct it onwards. The signals may be sensor control signals or sensor output signals to/from a plurality of sensors 26, 28, 30, for example camera sensors. The apparatus may further comprise one or more wavelength division multiplexers 68, 94 and/or wavelength division demultiplexers 66, 95.</p> |
