LIGHT RECEIVING DEVICE, MOUNTING STRUCTURE THEREOF, AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a light receiving device, which has a semiconductor element mounted with a small parasitic inductance caused by mounting and has flat frequency characteristics over a wide range, and which can efficiently radiate an amplifier without disturbing an optical coupling part between an optical fiber and a light receiving element. SOLUTION: In the light receiving device which includes an optical fiber, a light receiving element for receiving an optical signal from the optical fiber, a multilayered substrate having a capacitive element built therein, and an amplifier element for amplifying a signal from the light receiving element; the light receiving element and the signal amplifier element are connected in a flip-chip connection manner as opposed to each other via the multilayered substrate, thus enabling efficient heat radiation of the amplifier.