| 摘要 |
The core adjusting process includes a procedure of searching for the position in which the photocurrent of the light-receiving element reaches its peak in each of the X-, Y-, and Z-directions. In the searching procedure, the light emitted from a multimode fiber of a MCP is gathered by a lens and is transmitted to the light-receiving element. A check is then made to determine whether, at in both directions of the search direction, there exist a first and second attenuation positions in which the photocurrent shows a predetermined attenuation relative to a peak value in a search range. If there exist the attenuation positions, a peak position is determined to be a position located within a second predetermined range from the middle point between the attenuation positions, and the relative positions of the receptacle and the CAN package are adjusted to the peak position.
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