PHOTODETECTOR
A photodetector according to the present disclosure can avoid wire peeling and connection defective, by separating a bonding wire connected to a ground pad of a TIA and a bonding wire connected to a ground potential of a PD sub-mount surface. A photodetector according to the present disclosure includes a substrate, a light-receiving unit installed on the substrate, the light-receiving unit converts an input optical signal into an electric signal, at least one of an anode electrode pad electrically connected to an anode of the light-receiving unit, at least one of a cathode electrode pad electrically connected to a cathode of the light-receiving unit, a ground pad provided on each of both sides of the anode electrode pad and the cathode electrode pad, at least one of a second ground pad installed outside the ground pad; and a wiring pattern electrically connects the ground pad and the second ground pad.
1 . A photodetector comprising:
a substrate;
a light-receiving unit installed on the substrate, the light-receiving unit converting an input optical signal into an electric signal;
at least one of an anode electrode pad electrically connected to an anode of the light-receiving unit;
at least one of a cathode electrode pad electrically connected to a cathode of the light-receiving unit;
a ground pad provided on each of both sides of the anode electrode pad and the cathode electrode pad;
at least one of a second ground pad installed outside the ground pad; and
a wiring pattern electrically connects the ground pad and the second ground pad.
2 . The photodetector according to claim 1 , further comprising a second wiring pattern, the second wiring pattern electrically connecting the ground pad adjacent to the anode electrode pad and the ground pad adjacent to the cathode electrode pad.
3 . A photodetector, comprising:
a substrate;
a light-receiving unit installed on the substrate, the light-receiving unit converting an input optical signal into an electric signal;
at least one of an anode electrode pad electrically connected to an anode of the light-receiving unit;
at least one of a cathode electrode pad electrically connected to a cathode of the light-receiving unit; and
a ground pad provided on each of both sides of the anode electrode pad and the cathode electrode pad,
wherein a length of the ground pad in a longitudinal direction is twice or more a length of the ground pad in a width direction.
4 . The photodetector according to claim 1 , wherein the photodetector is any one of a back incident type photodiode, a front incident type photodiode, and an end surface incident type photodiode.
5 . The photodetector according to claim 2 , wherein the photodetector is any one of a back incident type photodiode, a front incident type photodiode, and an end surface incident type photodiode.
6 . The photodetector according to claim 3 , wherein the photodetector is any one of a back incident type photodiode, a front incident type photodiode, and an end surface incident type photodiode.