| 摘要 |
The invention provides an optical isolator including a light collector for redirecting and/or absorbing backward propagating radiation. In the preferred embodiment, the light collector includes at least one of a light absorbing material and a light redirector that does not interfere with forward propagating radiation, but collects the unwanted backward propagating light. Accordingly, the light collecting means are suitable for high power applications for protecting the input optics, including epoxy used to secure the input optical fiber, from unwanted reflected light. Some examples of appropriate light collecting means include neutral density filters, polarizers, mirrors, and right angle prisms.
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