| CPC H04B 10/071 (2013.01) [G02B 6/4246 (2013.01); H04B 10/40 (2013.01)] | 22 Claims |

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1. An optical time domain reflector structure, configuring to reflect at least a part of a plurality of optical signal on an optical path, comprising
a carrier, having a first end and a second end, the carrier comprises a restricting part and a fixing part, the restricting part is disposed between the first end and the second end, and the fixing part is disposed on the first end and spaced apart from the restricting part; and
a reflection filter, disposed on the fixing part in spaced apart relation from the restricting part, and connected to the first end, the reflection filter comprises a first reflection surface and a second reflection surface, the first reflection surface and the second reflection surface are respectively located on opposite sides of the reflection filter, the first and the second reflection surface have a first radius of curvature and a second radius of curvature respectively, and the first radius of curvature is not bigger than the second radius of curvature;
wherein parts of the optical signals are reflected by the reflection filter and back along to the optical path.
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