Modular optical device with component insert

• US 7,334,948 B2
• Filed: 05/23/2005
• Issued: 02/26/2008
• Est. Priority Date: 05/21/2004
• Status: Active Grant

• Current Assignee: II-VI Delaware, Inc. (Coherent Corp.)
• Original Assignee: Finisar Corporation (II-VI Incorporated)
• Inventors: Allouche, David, Togami, Chris K., Sasser, Gary
• Primary Examiner(s): Bovernick; Rodney
• Assistant Examiner(s): ROJAS, OMAR R
• Application Number:
  US11/135,835
• Publication Number:
  US 20050265670A1
• Time in Patent Office: 1,009 Days
• Field of Search: None
• US Class Current: 385/92
• CPC Class Codes: G02B 6/4201 Packages, e.g. shape, construction, internal or external details
• CPC Class Codes: G02B 6/4246 Bidirectionally operating package structures
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements

Abstract

Embodiments of the present invention are directed to a modular optical device with a component insert for sending and/or receiving optical signals. A first fabricated package includes a light source for generating optical signals and/or a light detector for detecting received optical signals. A second fabricated package includes an opening for accepting circuitry. A lead frame mechanically connects the first fabricated package to the second fabricated package and electrically connects the light source and/or the light detector in the first fabricated package to contacts exposed in the opening of the second fabricated package. A component insert is mechanically coupled to the second fabricated package and electrically coupled to the exposed contacts for electrical interoperation with the light source and/or the light detector to transfer optical signals. The modular optical device can be coupled to a substrate configured to be received within a standard host system slot.

Claims

1. A modular optical device, comprising:

a first fabricated package including at least one of a light source for generating optical signals and a light detector for detecting received optical signals;

a second fabricated package that defines an opening within which is positioned a plurality of contacts that are exposed when the opening is unoccupied;

a lead frame that mechanically connects the first fabricated package to the second fabricated package and that electrically connects the at least one of the light source and light detector in the first fabricated package to the contacts positioned in the opening of the second fabricated package; and

a component insert positioned within the opening defined by the second fabricated package and electrically coupled to the contacts positioned within the opening such that components of the component insert can electrically communicate with the at least one of the light source and light detector, wherein the modular optical device has first and second associated states defined such that;

in the first state, the first fabricated package is substantially coplanar with the second fabricated package; and

in the second state, the first and second fabricated packages are positioned one on top of the other.

2. The modular optical device as recited in claim 1, wherein the first fabricated package includes a light source for generating optical signals.

3. The modular optical device as recited in claim 1, wherein the first fabricated package includes a light detector for detecting optical signals.

4. The modular optical device as recited in claim 1, further comprising:

one or more external connectors mechanically coupled to the second fabricated package, the one or more external connectors facilitating mechanical and/or electrical connections to external components.

5. The modular optical device as recited in claim 1, further comprising:

a lens block mechanically coupled to the first fabricated package, the lens block configured such that one or more lens pins can mechanically couple to the lens block.

6. The modular optical device as recited in claim 5, further comprising:

a lens pin mechanically coupled to the lens block, the lens pin for directing an optical signal between the light source and corresponding external component.

7. The modular optical device as recited in claim 5, further comprising:

a lens pin mechanically coupled to the lens block, the lens pin for directing an optical signal between an external component and a corresponding light detector.

8. The modular optical device as recited in claim 1, wherein the fabricated first package includes a laser.

9. The modular optical device as recited in claim 8, wherein the first fabricated package includes a vertical cavity surface emitting laser.

10. The modular optical device as recited in claim 1, wherein the fabricated first package includes a photodiode.

11. The modular optical device as recited in claim 1, wherein the first fabricated package is a plastic fabricated package and the second fabricated package is a plastic fabricated package.

12. The modular optical device as recited in claim 1, wherein the component insert is selected from among a printed circuit board insert, a ceramic substrate insert, a silicon substrate insert, and a glass substrate insert.

13. The modular optical device as recited in claim 12, wherein the component insert includes at least one of a transimpedance amplifier circuit and a laser driver circuit.

14. The modular optical device as recited in claim 1, wherein contacts of the component insert are wired bonded to the exposed contacts.

15. The modular optical device as recited in claim 1, wherein the component insert is mechanically coupled to the second fabricated package with epoxy.

16. The modular optical device as recited in claim 1, wherein the component insert includes one or more surface mount components that are surface mounted on the component insert.

17. The modular optical device as recited in claim 1, further comprising:

a second component insert mechanically coupled to the second fabricated package and electrically coupled to the exposed contacts such that components of the second component insert can electrically interoperate with the at least one of the light source and light detector.

18. The modular optical device as recited in claim 1, wherein the first fabricated package and the second fabricated package are positioned one on top of the other.

19. The modular optical device as recited in claim 1, wherein the component insert includes one or more integrated circuits that are die attached and wire bonded to the printed circuit board insert.

20. The modular optical device as recited in claim 19, wherein the one or more integrated circuits are epoxy glob topped or capped.

21. An optoelectronic interface device comprising:

a host bus adapter having a printed circuit board with at least one connector for electrically interfacing with a host device; and

a modular optical device configured to mechanically and electrically interface with the host bus adapter, the modular optical device comprising;

a first fabricated package including at least one of a light source and a light detector;

a second fabricated package with an opening for accepting circuitry that is to electrically interoperate with the at least one of a light source and light detector, the second fabricated package including a connection portion for electrically coupling the modular optical device to the host bus adapter;

a lead frame that mechanically connects the first fabricated package to the second fabricated package and that electrically connects the at least one of a light source and light detector in the first fabricated package to contacts of the lead frame exposed in the opening of the second fabricated package;

a component insert mechanically coupled to the second fabricated package and electrically coupled to the exposed contacts such that components in the printed circuit board insert can electrically interoperate with components included in the first fabricated package to transfer optical signals;

a lens block mechanically coupled to the first fabricated package, the lens block configured to receive one or more lens pins; and

at least one lens pin mechanically coupled to the lens block, the at least one lens pin for transferring an optical signal between the at least one of a light source and a light detector and an external component, wherein the modular optical device has first and second associated states defined such that;

in the first state, the first fabricated package is substantially coplanar with the second fabricated package; and

in the second state, the first and second fabricated packages are positioned one on top of the other.

22. The optoelectronic interface device as recited in claim 21, wherein the host bus adapter includes components for converting between an optical signal and an electrical signal.

23. The optoelectronic interface device as recited in claim 21, wherein the host bus adapter includes a laser driver.

24. The optoelectronic interface device as recited in claim 21, wherein the host bus adapter includes a transimpedance amplifier.

25. The optoelectronic interface device as recited in claim 21, wherein the optoelectronic interface device is configured to be substantially received within a standard slot of the host device.

26. The optoelectronic interface device as recited in claim 25, wherein the standard slot comprises one of:

a PCI card slot and a PCMCIA card slot.

27. The optoelectronic interface device as recited in claim 21, wherein the host bus adapter comprises a printed circuit board for one of a peripheral component interconnect card and a PCMCIA card.

28. The modular optical device as recited in claim 21, wherein the component insert includes a laser driver circuit.

29. The modular optical device as recited in claim 21, wherein the component insert includes a transimpedance amplifier circuit.

30. The modular optical device as recited in claim 21, wherein contacts of the component insert are wired bonded to the exposed contacts.

31. The modular optical device as recited in claim 21, wherein the component insert is mechanically coupled to the second fabricated package with epoxy.

32. The modular optical device as recited in claim 21, wherein the component insert includes one or more integrated circuits that are die attached and wire bonded to the component insert.

33. The modular optical device as recited in claim 32, wherein the one or more integrated circuits are epoxy glob topped or capped.

34. The modular optical device as recited in claim 21, wherein the component insert includes one or more surface mount components that are surface mounted on the component insert.

35. The optoelectronic interface device as recited in claim 21, further comprising:

a second component insert mechanically coupled to the second fabricated package and electrically coupled to the exposed contacts such that components in the component insert can also electrically interoperate with components included in the first fabricated package and the component insert to transfer optical signals.

36. A modular optical device comprising:

a first fabricated package including a laser and a photodiode;

a second fabricated package with an opening for accepting circuitry that is to electrically interoperate with the laser and the photodiode;

a lead frame that mechanically connects the first fabricated package to the second fabricated package and that electrically connects the laser and the photodiode in the first fabricated package to contacts exposed in the opening of the second fabricated package;

a printed circuit board insert mechanically coupled to the second fabricated package and electrically coupled to the exposed contacts such that components included in the printed circuit board insert can electrically interoperate with the laser and photodiode;

a lens block configured to receive a plurality of lens pins and configured to mechanically couple to a first fabricated package;

a first lens pin mechanically coupled to the lens block for directing an optical signal from the laser to an external component; and

a second lens pin mechanically coupled to the lens block for directing an optical signal from an external component to the photodiode, wherein the modular optical device has first and second associated states defined such that;

in the first state, the first fabricated package is substantially coplanar with the second fabricated package; and

in the second state, the first and second fabricated packages are positioned one on top of the other.

37. The modular optical device recited in claim 36, wherein the first fabricated package is a plastic fabricated package and the second fabricated package is a plastic fabricated package.

38. The modular optical device recited in claim 36, wherein the printed circuit board insert includes a laser driver circuit and a transimpedance amplifier circuit.

39. The modular optical device recited in claim 36, wherein the laser is a vertical cavity surface emitting laser.

40. An optoelectronic interface device comprising:

a host bus adapter having a printed circuit board with at least one connector for electrically interfacing with a host device; and

a modular optical device that mechanically and electrically interfaces with the host bus adapter, the modular optical device comprising;

a first fabricated package including an optical transmitter and/or an optical detector;

a second fabricated package that defines an opening within which is positioned a plurality of contacts that are exposed when the opening is unoccupied;

a lead frame that mechanically connects the first fabricated package to the second fabricated package and that electrically connects the at least one of the light source and light detector in the first fabricated package to the contacts positioned in the opening of the second fabricated package; and

a component insert positioned within the opening defined by the second fabricated package and including contacts that are electrically coupled to the contacts positioned within the opening of the second fabricated package such that components of the component insert can electrically communicate with the at least one of the light source and light detector wherein the modular optical device has first and second associated states defined such that;

in the first state, the first fabricated package is substantially coplanar with the second fabricated package; and

in the second state, the first and second fabricated packages are positioned one on top of the other.