Electro-optic device board

• US 5,864,642 A
• Filed: 02/10/1997
• Issued: 01/26/1999
• Est. Priority Date: 02/10/1997
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Denvir, Melissa, Charles, George Edward, Schwartz, Daniel B., Halling, Dale Brian, Chun, Christopher K. Y.
• Primary Examiner(s): Lee, John D.
• Application Number:
  US08/797,441
• Time in Patent Office: 715 Days
• Field of Search: 385/14, 385/15, 385/24, 385/27, 385/31, 385/34, 385/36, 385/37, 385/39, 385/47, 385/48, 385/50, 385/88, 385/89
• US Class Current: 385/14
• CPC Class Codes: G02B 6/43 Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
• CPC Class Codes: H05K 1/0274 Optical details, e.g. printed circuits comprising integral optical means H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42

Abstract

A flexible electro-optic circuit board (20) includes a polymer circuit board (22) and a polymer optical backplane (34). The polymer circuit board (22) includes a plurality of circuit elements (50, 52). The polymer optical backplane (34) has a plurality of optical transmission lines (44). A plurality of optical vias (30) couple the polymer circuit board (22) to the polymer optical backplane (34).

Claims

1. An electro-optic circuit board comprising:

a flexible electrical circuit board having a plurality of electrical conductors, the flexible circuit board having a first major surface, and a second opposed major surface and a plurality of sockets extending therethrough from the first major surface to the second major surface;

a flexible optical plane attached in parallel juxtaposition to the first surface of the flexible electrical circuit board, the optical plane further including a plurality of optical transmission lines and a plurality of socket extensions extending partially through the optical plane and optically coupled to the optical transmission lines, the plurality of socket extensions being axially aligned, one each, with the plurality of sockets in the electrical circuit board; and

a plurality of electro-optic devices each including a plurality of electrical terminals and an optical port, each of the electro-optic devices further including an associated optical pin extending outwardly therefrom and in optical communication with the optical port, the plurality of electro-optic devices being mounted on the second surface of the flexible electrical circuit board with the plurality of electrical terminals coupled to the plurality of electrical conductors and the associated optical pin inserted in a socket and aligned socket extension so that the optical port is in communication with at least one optical transmission line.

2. The electro-optic circuit board of claim 1, wherein the flexible optical plane comprises a first layer having a first index of refraction, and a second layer having a second index of refraction.

3. The electro-optic circuit board of claim 2, wherein the optical plane further comprises a third layer having a third index of refraction.

4. The electro-optic circuit board of claim 3, wherein each of the plurality of optical pins has a tip extended into the flexible optical plane, the tip having a circular pyramid reflector.

5. The electro-optic circuit board of claim 3, wherein each of the plurality of optical pins has a tip extended into the flexible optical plane, the tip having a holographic imaging element.

6. The electro-optic circuit board of claim 2, wherein the plurality of optical pins carry a plurality of optical signals.

7. The electro-optic circuit board of claim 6, wherein each of the plurality of optical pins has a filter.

8. The electro-optic circuit board of claim 6, wherein each of the plurality of optical pins has a tip extending into the optical plane, the tip having a holographic element that selects optical signals having a desired frequency.

9. The electro-optic circuit board of claim 1, wherein the flexible electrical circuit board has a semiconducting layer on which a plurality of semiconducting devices are formed.

10. An electro-optic circuit board comprising:

a polymer electrical circuit board having a first surface, an opposed second surface, and a plurality of electrical conductors;

a polymer optical plane attached to the first surface of the polymer electrical circuit board;

a plurality of electro-optic devices mounted on the second surface of the electrical circuit board, each electro-optic device having a plurality of electrical terminals coupled to the electrical conductors of the electrical circuit board and an optical port; and

a plurality of optical vias connecting the optical port of each of the plurality of electro-optic devices on the polymer electrical circuit board to the polymer optical plane.

11. The electro-optic circuit board of claim 10, wherein the optical plane has a plurality of optical transmission lines.

12. The electro-optic circuit board of claim 11, wherein one of the plurality of optical vias is connected to one of the plurality of optical transmission lines.

13. The electro-optic circuit board of claim 11, wherein one of the plurality of vias has a tip extended into one of the plurality of optical transmission lines and the tip includes a prism.

14. The electro-optic circuit board of claim 11, wherein one of the plurality of vias has a tip extended into one of the plurality of optical transmission lines and the tip includes a holographic element.