Media converter

• US 7,331,819 B2
• Filed: 05/09/2006
• Issued: 02/19/2008
• Est. Priority Date: 07/11/2005
• Status: Active Grant

• Current Assignee: II-VI Delaware, Inc. (Coherent Corp.)
• Original Assignee: Finisar Corporation (II-VI Incorporated)
• Inventors: Haile-Mariam, Atikem, Kamath, Kishore, Nelson, Stephen T.
• Primary Examiner(s): Abrams; Neil
• Assistant Examiner(s): Imas; Vladimir
• Application Number:
  US11/382,457
• Publication Number:
  US 20070010132A1
• Time in Patent Office: 651 Days
• Field of Search: 439/577, 439/623, 385/73, 385/75, 385/53, 385/55, 385/88, 385/85, 385/89, 385/92
• US Class Current: 439/577
• CPC Class Codes: G02B 6/4201 Packages, e.g. shape, construction, internal or external details
• CPC Class Codes: G02B 6/4274 Electrical aspects G02B6/4263 and G02B6/4265 take precedence
• CPC Class Codes: G02B 6/4284 of optical modules with disconnectable electrical connectors latching arms for electrical connectors H01R13/627
• CPC Class Codes: H01R 13/6658 on printed circuit board H01R13/6666 - H01R13/6691 take precedence
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45

Abstract

Media converters for use in optical-to-electrical and electrical-to-optical conversion. A media converter includes an outer housing, an electrical plug disposed on one end of the outer housing, an optical cable disposed on an opposite end of the outer housing, and circuitry that connects to both the electrical plug and the optical cable. In this example, the circuitry receives electrical signals from the electrical plug and outputs corresponding optical signals to the optical cable. In addition, the circuitry also receives optical signals from the optical cable and outputs corresponding electrical signals to the electrical plug.

Claims

1. A media converter comprising:

a housing;

an optical transmit port and an optical receive port disposed on one end of the housing;

an electrical plug disposed on the housing comprising;

a first pin dedicated for transmitting a first electrical signal;

a second pin dedicated for receiving a second electrical signal; and

a third pin associated with at least one of a TxD signal and a RxLOS signal; and

circuitry configured to convert a third electrical signal received by the optical receive port into the first electrical signal and to convert the second electrical signal into a fourth electrical signal transmitted by the optical transmit port.

2. The media converter as recited in claim 1, wherein the electrical plug is RJ-45 compliant.

3. The media converter as recited in claim 1, wherein the electrical plug comprises a fourth pin through which the circuitry is configured to receive power.

4. The media converter as recited in claim 3, wherein the third pin is dedicated for receiving the transfer disable signal, the electrical plug further comprising a fifth pin dedicated for receiving the receiver loss signal, and

wherein the fourth and fifth pins are positioned at a first end of the electrical plug and the first, second, and fourth pins are positioned at a second end opposite to the first end of the electrical plug.

5. The media converter as recited in claim 1, wherein:

the circuitry is configured to receive the second electrical signal from the electrical plug at gigabit speeds, convert a first format of the second electrical signal to a second format of the fourth electrical signal, and output the fourth electrical signal to the optical transmit port at gigabit speeds; and

the circuitry is configured to receive the third electrical signal from the optical receive port at gigabit speeds, convert the second format of the third optical signal to the first format of the first electrical signal, and output the first electrical signal to the electrical plug at gigabit speeds.

6. The media converter as recited in claim 1, wherein the electrical plug further comprises:

a fourth pin dedicated for receiving power;

a fifth pin dedicated for receiving ground;

a sixth pin dedicated for transmitting a signal opposite in polarity to the first electrical signal;

a seventh pin dedicated for receiving a signal opposite in polarity to the second electrical signal; and

an eight pin associated with the TxD signal, wherein the third pin is associated with the RxLOS signal.

7. The media converter as recited in claim 1, wherein the circuitry is configured to convert electrical signals having a first format that complies with an electrical standard to a second format that complies with an optical standard.

8. The media converter as recited in claim 1, further comprising:

an optical cable disposed on a second end of the housing;

an optical transmitter disposed within the housing and optically connected with the optical cable;

an optical receiver disposed within the housing and optically connected with the optical cable;

wherein the circuitry connects to the electrical plug, the optical transmitter, and the optical receiver, the circuitry being configured to receive electrical signals from the electrical plug and to output corresponding electrical signals to the optical transmitter, the circuitry also being configured to receive electrical signals from the optical receiver and to output corresponding electrical signals to the electrical plug.

9. The media converter as recited in claim 8, wherein the third electrical signal is received by the optical receive port as an optical signal and is converted into the third electrical signal by the optical receiver.

10. The media converter as recited in claim 8, wherein the fourth electrical signal is converted into an optical signal by the optical transmitter for transmission to the optical cable.

11. The media converter as recited in claim 8, wherein the optical receiver acts as an opto-electric transducer by transforming the third electrical signal from an optical form into the electrical form and the optical transmitter acts as an electro-optical transducer by transforming the fourth electrical signal into an optical signal.

12. The media converter as recited in claim 8, further comprising a post amplifier electrically connected to the optical receiver and a laser driver electrically connected to the optical transmitter.

13. The media converter as recited in claim 8, wherein the optical receiver includes a photodiode and the optical transmitter includes a laser, a VCSEL, and/or an LED.

14. The media converter as recited in claim 8, further comprising a power connector at least partially positioned in the housing and configured to interface with a second power supply that is independent from the electrical plug, the power connector being electrically connected to the circuitry.

15. The media converter as recited in claim 8, wherein the optical cable includes at least one of a single mode fiber optic cable, a multimode fiber optic cable and/or a plastic optical fiber optic cable.

16. The media converter as recited in claim 8, wherein the optical cable is permanently attached to an optical port of the media converter.

17. The media converter as recited in claim 8, wherein the optical cable is not permanently attached to an optical port of the media converter.

18. The media converter as recited in claim 17, wherein the optical ports include a MU, LC, SC, and/or MT-RJ optical cable connector.

19. The media converter as recited in claim 1, wherein the media converter further comprises an alternating current to direct current converter electrically connected to the power connector.

20. The media converter as recited in claim 19, wherein the alternating current to direct current converter is disposed inside the housing.

21. The media converter as recited in claim 19, wherein the alternating current to direct current converter is disposed outside the housing.

22. The media converter as recited in claim 1, wherein the electrical plug is RJ-11, RJ-14, RJ-25, RJ-48, RJ-61 and/or RJ-45 compliant.

23. The media converter as recited in claim 1, wherein electrical signals received by the electrical plug include electrical signals of opposite polarities.

24. The media converter as recited in claim 23, wherein the electrical signals of opposite polarities include both Transmit+ (“

Tx+”

) and Transmit−

(“

Tx−

”

) of opposite polarities.

25. The media converter as recited in claim 23, wherein the electrical signals of opposite polarities include both Receive+ (“

Rx+”

) and Receive−

(“

Rx−

”

) of opposite polarities.

26. The media converter as recited in claim 1, wherein the electrical signals include multiple data bits in parallel.

27. The media converter as recited in claim 1, wherein the circuitry is further configured to multiplex signals prior to transmission by the optical transmit port.

28. The media converter as recited in claim 1, wherein the circuitry is further configured to demultiplex signals received by the optical receive port.

29. The media converter as recited in claim 1, wherein the circuitry includes a single chip or multiple chips.

30. The media converter as recited in claim 1, further comprising a wall mount for mounting the media converter to a wall.

31. The media converter as recited in claim 5, wherein the first format is associated with an electrical data transmission protocol and the second format is associated with an optical data transmission protocol.

32. The media converter as recited in claim 31, wherein the electrical data transmission protocol includes a Gigabit Ethernet protocol.

33. A system comprising:

two media converters as recited in claim 1, a first of the media converters disposed at a first end of an optical cable and a second of the media converters disposed at a second end of the optical cable.

34. A system as recited in claim 33, wherein the two media converters are permanently attached to the ends of the optical cable.

35. A system as recited in claim 33, wherein the system further comprises two optical cables, a first of the optical cables coupling the receive port of the first of the media converters with the transmit port of the second of the media converters, and a second of the optical cables coupling the transmit port of the first of the media converters with the receive port of the second of the media converters.

36. A network comprising a media converter as recited in claim 1 connected to a storage device.