| 摘要 |
An optical attenuator and/or optical terminator (100-500) includes an optical channel (101, 401) having two regions with different optical properties, such as an undoped silicon region which is less optically absorptive and a doped silicon region which is more optically absorptive. Other materials may also be used. A facet (122-422, 424) at the interface between the two regions is oriented at a non-perpendicular angle relative to a longitudinal axis (124) of the channel (101, 401). The angle can be configured to mitigate back reflection. Multiple facets (122-422, 424) may be included between different pairs of regions. The device may further include curved section (610) and/or tapers (512, 612) to further facilitate attenuation and/or optical termination. |
