Transmission optical fiber
Patent 6873774 Issued on March 29, 2005. Estimated Expiration Date: 
December 27, 2022. 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.
December 27, 2022. 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 ReferencesGlass preform for dispersion shifted single mode optical fiber and method for the production of the same Dispersion compensating optical fiber Dispersion managed optical waveguide Raman amplifier with pump source for improved performance Patent #: 6147794 InventorsAssigneeApplicationNo. 10329544 filed on 12/27/2002US Classes:385/123, OPTICAL FIBER WAVEGUIDE WITH CLADDING385/126Utilizing multiple core or claddingExaminersPrimary: Palmer, Phan T. H.Attorney, Agent or FirmForeign Patent References
International ClassesG02B006/16G02B006/10 AbstractThe present invention relates to a transmission optical fiber. The transmission optical fiber including a core and a cladding made of SiO2 is characterized in that GeO2 and F are doped in SiO2 of the core and the cladding. Therefore, a high Raman gain coefficient could be obtained while a desired dispersion value and a non-linearity are maintained, by controlling the refractive index of the core and the cladding. Further, the pump power of the laser diode could be reduced and the cost of the laser diode could be lowered accordingly. In addition, the life of the laser diode is extended since the laser diode needs not to be operated at a high output.Other References
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