US 6,200,041 B1 · Data transfer system incorporating optical fiber link module with internal electromagnetic shield

Abstract

The invention provides an internal electromagnetic shield that prevents the radiation of electro-magnetic emissions from electro-optical components in high speed data transfer systems. The present invention provides an internal shield with at least one aperture to allow the connector portion of an electro-optic component to pass through for connection to an optical fiber. By providing an internal shield, electromagnetic interference (EMI) is substantially reduced without interfering with the mechanical connection between an electro-optical component and an optical fiber. The internal shield typically is formed of a thin metallic sheet having apertures to receive the connector portion of electro-optical components. In a shield for an input/output device, which includes an optical signal generator and optical signal receiver, the shield may include two bores.

Claims22

Dependent claims

A data transfer system including an internally shielded optical fiber link module, the optical fiber link module comprising:

a frame with an optical fiber connection unit;
an electronic circuit mounted within the frame;
first and second electro-optical components, connected to the electronic circuit, each having a distal ferrule receiving end;
and
an internal electromagnetic shield, mounted within the optical fiber connection unit and having two apertures sized to receive the distal ferrule receiving ends of the first and second electro-optical components.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

09/457,285Filed 8 Dec 1999 · division

Priority

12 Sep 1997

Granted

13 Mar 2001

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02B 6/4277
Electrical aspects: protection against electromagnetic interference [EMI], e.g. shielding means
G02B 6/4246
Packages, e.g. shape, construction, internal or external details: bidirectionally operating package structures
G02B 6/4292
Coupling light guides with opto-electronic elements: the light guide being disconnectable from the opto-electronic element, e.g. mutually self…
G02B
Optical elements, systems or apparatus

Data transfer system incorporating optical fiber link module with internal electromagnetic shield

Life of this patent

Data transfer system incorporating optical fiber link module with internal electromagnetic shield

Life of this patent

Abstract

Claims22