Browse Prior Art Database

Opto-Electronic Cross Point Switch Packaging Assembly

IP.com Disclosure Number: IPCOM000100247D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 3 page(s) / 111K

Publishing Venue

IBM

Related People

Gjone, R: AUTHOR [+4]

Abstract

This article describes a higher level of integration of optical fiber/ electronic interface elements of the kind shown in the preceding article. In the higher level of integration described in the present article, several multichannel subassemblies are related by a cross-point switch.

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Opto-Electronic Cross Point Switch Packaging Assembly

       This article describes a higher level of integration of
optical fiber/ electronic interface elements of the kind shown in the
preceding article. In the higher level of integration described in
the present article, several multichannel subassemblies are related
by a cross-point switch.

      Fig. 1 shows an exploded view of major elements of the
assembly.  Portions having functions similar to those of the
referenced article are given similar numbers.  Electro-optic
transducer subassembly substrates 16 communicate via optical fiber
"pig-tails" 10 between electrical edge contact arrays 18 and optical
connectors 12 for other devices.  The several substrates 16 are
received in slots 19 in an optic subassembly heat sink 40 functioning
also as a front end housing structure.  A multilayer ceramic
interconnection substrate 24 has connector sockets 22 for the
respective edge contact arrays 18.

      A logic heat sink 32 has cavities 30 for receiving logic chips
28 (carried on the surface of 24 hidden in Fig. 1), corresponding to
the respective electro-optic subassemblies 16.  The logic heat sink
21 also has a relatively large, centrally located cavity 33 to
receive a cross- point switch chip 38 also carried on the back
surface of the interconnection substrate 24.

      Finally, the interconnection substrate 24 has an array of
input- output electrical contact pins 34 accessible by a socket
element (n...