Method and apparatus for data transmission in the wavelength-division multiplex method in an optical ring network
Patent 6701085 Issued on March 2, 2004. Estimated Expiration Date: 
January 23, 2020. 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.
January 23, 2020. 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.Patent ReferencesPassive protected self healing ring network Optical fiber transmission system utilizing a line switched ring to provide protection System and method for photonic facility and line protection switching Ring network for transmitting wavelength-multiplexed informations Patent #: 5760934 InventorAssigneeApplicationNo. 09/463528 filed on 01/23/2000US Classes:398/4, Using a secondary ring or loop398/3In a ring or loopExaminersPrimary: Chan, JasonAssistant: Leung, Christina Y Attorney, Agent or FirmInternational ClassH04J 14/02 (20060101)Foreign Application Priority Data1997-07-22 DEAbstractMethod for data transmission in a bi-directional working channel between a plurality of terminals of an optical ring network having a protection means that, given a disturbed data transmission, sets up a protection connection in the wavelength-division multiplex method in a working channel via the undisturbed section of the ring network in a single bi-directional protection channel that has at least the transmission capacity of the working channel.Other References
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