Patent ID: 7046936

Claim:
A light receiving element carrier having a chip mounting surface, said carrier comprising: a light receiving element mounted on the chip mounting surface; a preamplifier connected to said light receiving element and mounted on the chip mounting surface; a first input terminal connected to said preamplifier and mounted on the chip mounting surface; a second input terminal connected to said preamplifier and mounted on the chip mounting surface under said first input terminal; a first intermediate line connected to said first input terminal at an end thereof, said first intermediate line extending horizontally inside said carrier; a second intermediate line connected to said second input terminal at an end thereof, said second intermediate line extending horizontally inside said carrier; a first via having an end connected to another end of said first intermediate line and another end that reaches a middle plane lying between said first and second intermediate lines; a second via having an end connected to another end of said second intermediate line and another end that reaches the middle plane; a first output line located on the middle plane, and having an end connected to the other end of said first via and another end exposed at a surface opposite to the chip mounting surface; and a second output line located on the middle plane, and having an end connected to the other end of said second via and another end exposed at the surface opposite to the chip mounting surface.