Telecommunications card for secure optical data transmission and installation method

• US 7,099,592 B2
• Filed: 02/02/2001
• Issued: 08/29/2006
• Est. Priority Date: 02/02/2001
• Status: Expired due to Term
• 

• Current Assignee: Oyster Optics, LLC
• Original Assignee: Oyster Optics, Inc. (Oyster Optics, LLC)
• Inventors: Snawerdt, Peter
• Primary Examiner(s): Phan, Hanh
• Application Number:
  US09/776,438
• Publication Number:
  US 20020105702A1
• Time in Patent Office: 2,034 Days
• Field of Search: 398/141, 398/161, 398/164, 398/188, 398/182, 398/135, 398/102, 398/163, 398/136, 398/138, 398/139, 398/202, 398/214, 398/185, 398/186, 398/183
• US Class Current: 398/141
• CPC Class Codes: G02B 6/4453 Cassettes

Abstract

A card for transmitting data over at least one optical fiber includes a transmitter having at least one light source and a phase modulator for phase modulating light from the source so as to create phase-modulated optical signals in the light as a function of an input electronic data stream; and a receiver having an interferometer for reading received optical signals.

Claims

1. A card for transmitting data over at least one optical fiber, the card comprising:

a transmitter having at least one light source and a phase modulator for phase modulating light from the source so as to create phase-modulated optical signals in the light as a function of an input electronic data stream; and

a receiver having an interferometer for reading received optical signals, the interferometer having a delay loop fiber; and

a fastening device for securing the delay loop fiber.

2. The card as recited in claim 1 wherein the at least one light is a laser.

3. The card as recited in claim 1 further including an energy level detector.

4. The card as recited in claim 1 wherein the fastening device secures the delay loop fiber to the card.

5. The card as recited in claim 4 further comprising a switch for switching between an amplitude-modulated mode and a phase-modulated mode.

6. The card as recited in claim 1 further including a circuit having a delayed feedback exclusive-or gate.

7. The card as recited in claim 1 wherein the interferometer includes a splitter and a coupler.

8. The card as recited in claim 1 wherein the card includes a backplane made from a printed circuit board.

9. The card as recited in claim 1 wherein the card is a replacement part for an existing optical multiplexor.

10. The card as recited in claim 1 further comprising a switch for switching between an amplitude-modulated mode and a phase-modulated mode.

11. The card as recited in claim 1 wherein interferometer includes a splitter and a coupler, the fastening device contacting the fiber loop between the splitter and the coupler.

12. The card as recited in claim 1 wherein the fastening device includes a spindle.

13. A card for transmitting data over at least one optical fiber, the card comprising:

a transmitter having at least one light source and a phase modulator for phase modulating light from the source so as to create phase-modulated optical signals in the light as a function of an input electronic data stream; and

a receiver having an interferometer for reading received optical signals; and

a faceplate having a fiber tap signal device for indicating a fiber tap.

14. A card for transmitting data over at least one optical fiber, the card comprising:

a transmitter having at least one laser and a single phase modulator for phase modulating all of the light from the laser so as to create phase-modulated optical signals in the light as a function of an input electronic data stream;

a receiver having an interferometer for reading received optical signals; and

a switch for switching between an amplitude-modulated mode and a phase-modulated mode.

15. The card as recited in claim 14 further comprising a fastening device for securing a delay loop fiber to the card.

16. The card as recited in claim 14 wherein the at least one light is a laser.

17. The card as recited in claim 14 further including an energy level detector.

18. The card as recited in claim 14 wherein the interferometer includes a delay loop fiber.

19. The card as recited in claim 14 wherein the card includes a faceplate having a fiber tap signal device.