US 7,071,491 B2 · TO-CAN type optical module

Abstract

A TO-CAN type optical module for used in an optical communication is disclosed. The optical module includes: a stem provided with optical components mounted on its upper surface and a through hole formed therethrough; a plurality of pins electrically connected to the optical components via the through hole and having a signal-carrying pin protruding from the lower surface of the stem; and a pair of ground pins spaced at both sides from a protruding portion of the signal-carrying pin. The interior of the through hole of the stem has a desired characteristic impedance by the impedance matching of a coaxial cable, and the lower surface of the stem has a desired characteristic impedance by the dimensions of the protruding portion of the signal-carrying pin and the ground pins and the interval between the protruding portion of the signal-carrying pin and the ground pins.

Claims20

Dependent claims

A TO-CAN type optical module comprising:

a stem provided with optical components mounted on its upper surface and having a hole formed therethrough;
a plurality of pins electrically connected to the optical components via the hole, said plurality of pins including a signal-carrying pin protruding from the lower surface of said stem;
and
a pair of ground pins spaced at both ends of a protruding portion of said signal-carrying pin by a predetermined interval, wherein the edges of said ground pins are partially removed to accommodate smaller interval separating the protruding portion of said signal-carrying pin and said ground pins to the intervals separating signal lines and ground lines of a PCB for mounting the signal-carrying pin and the ground pins thereon.

1 more element

Dependencies are inferred from the claim text.

TO-CAN type optical module

Life of this patent

TO-CAN type optical module

Life of this patent

Abstract

Claims20