Method, system and device for data transfer in an optical network

Patent 8103171 Issued on January 24, 2012. Estimated Expiration Date:

March 21, 2028. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Huawei Technologies Co., Ltd.

Application

No. 12053189 filed on 03/21/2008

US Classes:

398/168Passive system

Examiners

Primary: Pascal, Leslie

Attorney, Agent or Firm

Leydig, voit & Mayer, Ltd.

Foreign Patent References

1620772 CN 05/01/2005
1815936 CN 08/01/2006

International Class

H04B 10/26

Abstract

A method for data transfer in an optical network, including: amplitude modulating, by a central office, an optical carrier by a downstream data with a first rate to generate a downstream optical signal carrying the downstream data; sending the downstream optical signal to a user terminal; obtaining, by the user terminal, the downstream data from the downstream optical signal; amplitude modulating, by the user terminal, the downstream optical signal by an upstream data with a second rate to generate an upstream optical signal, wherein the ratio of the first rate to the second rate is greater than 1; sending the upstream optical signal to the central office; and receiving, by the central office, the upstream optical signal, and obtaining, by the central office, the upstream data from the upstream optical signal. Furthermore, the present invention discloses a system and device for data transfer in the optical network. With the invention, the complexity of the system may be effectively reduced, and the cost of the device may be lowered.

Other References

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