Fiber optic receiver module

Details Fiber optic receiver module Fiber optic receiver module

1984-03-27

1987-03-03

Lee, John

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250227, 357 84, G02B 642

Patent

active

046471480

ABSTRACT:
A fiber optic receiver module comprises a substrate and circuit elements (i.e., IC and resistors, etc.) mounted on the substrate. The IC are electrically connected by bonding wires and bonding pads to input and output conductive patterns extending within the substrate. The leads of a photodetector are electrically connected to the input lines of the IC by pads formed on the substrate and the input conductive pattern. The output terminals of the module are connected to the output terminals of the IC by the output conductive pattern. Conductive layers are formed within the substrate. They are held at ground potential. The input and output conductive patterns are shielded from one another by these conductive layers. The circuit elements are shielded from the outside by a seal ring and a conductive shell both fixed to the upper surface of the substrate. The photodetector is located within a space defined by the seal ring, a metal cover covering the ring, a receptacle and a metal plate secured to the lower surface of the substrate. Hence, this element is shielded from the circuit elements and the output terminals of the module.

REFERENCES:
patent: 3908185 (1975-09-01), Martin
patent: 4266239 (1981-05-01), Miyagaki et al.
patent: 4360823 (1982-11-01), van Gils
patent: 4458291 (1984-07-01), Yanagisawa et al.

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