OPTICAL NETWORK UNIT TRANSCEIVER

• US 20100129035A1
• Filed: 11/13/2009
• Published: 05/27/2010
• Est. Priority Date: 11/13/2008
• Status: Active Grant

• Current Assignee: II-VI Delaware, Inc. (Coherent Corp.)
• Original Assignee: Finisar Corporation (II-VI Incorporated)
• Inventors: Teo, Tat Ming
• Granted Patent: US 8,287,192 B2
• Time in Patent Office: Days
• US Class Current: 385/88
• CPC Class Codes: G02B 6/36 Mechanical coupling means G02B6/255, G02B6/42 take precedence
• 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: H04B 10/40 Transceivers

Abstract

In one example embodiment, a pluggable ONU transceiver module comprises a top shell, a bottom shell configured to mate with the top shell to form a cavity, and a PCB disposed within the cavity. A plurality of pins are coupled to the PCB and are configured to be inserted into a protruding socket of a host device through the bottom shell. The protruding socket is mounted on a PCB of the host device. The pluggable ONU transceiver module further comprises one or more guiding features integrated with the bottom shell and configured to ensure that the pins are inserted correctly into the protruding socket, and means for positioning the top shell at a predetermined height above the PCB of the host device to allow coupling of the top shell to a heatsink of the host device.

Claims

1. A pluggable optical network unit transceiver module comprising:

a top shell;

a bottom shell configured to mate with the top shell to form a cavity;

a printed circuit board disposed within the cavity;

a plurality of pins coupled to the printed circuit board and configured to be inserted into a protruding socket mounted on a printed circuit board of a host device through the bottom shell;

one or more guiding features integrated with the bottom shell and configured to ensure that the plurality of pins are inserted correctly into the protruding socket; and

means for positioning the top shell at a predetermined height above the printed circuit board of the host device to allow coupling of the top shell to a heatsink of the host device.

2. The module of claim 1, wherein the one or more guiding features comprise an opening formed in the bottom shell, the opening having a shape that substantially corresponds to a shape of the protruding socket, the plurality of pins being positioned within the cavity such that when the opening is aligned with the protruding socket, each of the plurality of pins is aligned with a corresponding hole of the protruding socket and received therein when the protruding socket is inserted through the opening.

3. The module of claim 2, further comprising an electromagnetic interference shield disposed in the cavity between the printed circuit board of the module and the bottom shell.

4. The module of claim 1, wherein the one or more guiding features include two tabs formed in the bottom shell, a distance between the two tabs being substantially equal to a length of the protruding socket to allow the protruding socket to be received between the two tabs.

5. The module of claim 1, wherein the means for positioning the top shell at a predetermined height above the printed circuit board of the host device comprises the bottom shell.

6. The module of claim 1, wherein the means for positioning the top shell at a predetermined height above the printed circuit board of the host device comprises the top shell.

7. The module of claim 1, wherein the means for positioning the top shell at a predetermined height above the printed circuit board of the host device comprises an insert configured to be coupled to the top shell.

8. A pluggable optical network unit transceiver module comprising:

a top shell;

a bottom shell configured to mate with the top shell to form a cavity;

a printed circuit board disposed within the cavity;

a plurality of pins, disposed within the cavity, coupled to the printed circuit board and configured to be inserted through the bottom shell into a protruding socket mounted on a printed circuit board of a host device in a manner such that the top shell is positioned at a predetermined height above the printed circuit board of the host device; and

an opening formed in the bottom shell and configured to ensure that the plurality of pins are inserted correctly into the protruding socket;

9. The module of claim 8, wherein the bottom shell is further configured to prevent the module from tilting when plugged into the host device.

10. The module of claim 8, wherein the opening is shaped to receive the protruding socket, the plurality of pins being positioned within the cavity such that when the opening is aligned with the protruding socket, each of the plurality of pins is aligned with a corresponding hole of the protruding socket and received therein when the protruding socket is inserted into the opening.

11. The module of claim 8, wherein the top shell includes a plurality of protrusions configured to engage a plurality of complementary openings formed in the bottom shell to secure the top shell and bottom shell together.

12. The module of claim 8, further comprising an electromagnetic interference shield disposed in the cavity between the printed circuit board of the module and the bottom shell and configured to substantially prevent electromagnetic radiation generated by the module from exiting the module.

13. The module of claim 12, wherein the electromagnetic interference shield includes individual holes through which the plurality of pins pass.

14. A pluggable optical network unit transceiver module comprising:

a top shell;

a bottom shell configured to mate with the top shell to form a cavity;

a printed circuit board disposed within the cavity;

a plurality of pins coupled to the printed circuit board and configured to be inserted through the bottom shell into a protruding socket mounted on a printed circuit board of a host device;

two guiding tabs integrally formed in the bottom shell and configured to ensure that the plurality of pins are inserted correctly into corresponding holes in the protruding socket; and

means for positioning the top shell at a predetermined height above the printed circuit board of the host device to allow coupling of the top shell to a heatsink of the host device.

15. The module of claim 14, wherein a distance between the guiding tabs is substantially equal to a length of the protruding socket to allow the protruding socket to be received between the guiding tabs, the plurality of pins being positioned between the guiding tabs such that when the guiding tabs are aligned with the protruding socket, each of the plurality of pins is aligned with a corresponding hole of the protruding socket.

16. The module of claim 14, wherein the means for positioning the top shell at a predetermined height above the printed circuit board of the host device comprises the top shell.

17. The module of claim 14, wherein the means for positioning the top shell at a predetermined height above the printed circuit board of the host device comprises an insert configured to be coupled to the top shell.

18. The module of claim 14, wherein the top shell includes a plurality of protrusions configured to engage a plurality of complementary openings formed in the bottom shell to secure the top shell and bottom shell together.

19. The module of claim 18, wherein the bottom shell includes a plurality of tabbed feet formed during formation of the plurality of openings, the plurality of tabbed feet configured to prevent the module from tilting when plugged into the host device.