| 摘要 |
An elevator with an all optical control apparatus having a control unit with a light source, a photodetector, an optical feeding fiber, and an optical feedback fiber. The light source is coupled to the optical feeding fiber and the optical feedback fiber is coupled to the photodetector. The all optical control apparatus further includes a member that can be manually actuated. The member has a fiber input and a fiber output. The fiber input is optically coupled to the optical feeding fiber and the fiber output is optically coupled to the optical feedback fiber. The member, when actuated, influences a light path between the fiber input and the fiber output in a manner that is detectable at the photodetector.
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