Next-Generation Optical Fiber Fabrication
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Transcript of Next-Generation Optical Fiber Fabrication
- 1. LLNL-PRES-773886This work was performed under the auspices of theU.S. Department of Energy by Lawrence LivermoreNational Laboratory under contract DE-AC52-07NA27344.Lawrence Livermore National Security, LLCDr. Jay W. Dawson, Fiber Technologies Group Leader
2. Lawrence Livermore National Laboratory LLNL-PRES-7738862 Fibers Diffraction limited beams Robust, flexible transport Operate in extreme environmentsand insensitive to electro-magneticinterference Fiber Lasers Low maintenance & high reliability Efficient (>30% wall-plug) High average powers (kW) 3. Lawrence Livermore National Laboratory LLNL-PRES-7738863Telecom Flexible Delivery forIndustrial MachiningHigh Power Laser SourcesDistributed SensorsShort-pulse surgerylaser deliverySensors for Oil and GasHigh Voltage Current SensorsThese are examples of a wide array of potential applications inflexible light transport, sensors and components for laser systems. 4. Lawrence Livermore National Laboratory LLNL-PRES-7738864Cross section: 125 m O.D. Very low losses attainableStrong and Flexible 50% transmission over 30km 5. Lawrence Livermore National Laboratory LLNL-PRES-7738865DiffractionPhotonic crystal fiberRefractionConventional fiber 6. 5 W at 44% optical efficiencyLawrence Livermore National Laboratory LLNL-PRES-7738866P = 0.065 W P = 1.1 W P = 2.4 W Optical Near FieldOptical Far Field250 m200 m10 m X 120 mYb3+ SlabWaveguideSecondaryWaveguide forDiode Pump Light65432100 5 10 15 20Output Power, WCoupled Pump Power, WExample: investigation ofrectangular core fiber lasersfor improved power scaling 7. Lawrence Livermore National Laboratory LLNL-PRES-7738867Proposed Design Calculated Waveguide Modes 8. Lawrence Livermore National Laboratory LLNL-PRES-7738868Computer Model Manufacturing Design 9. Lawrence Livermore National Laboratory LLNL-PRES-7738869Raw MaterialDraw to ~1mmrods and tubesStack to Fiber DesignFinal Preform inFurnaceFiber ProductionDrawTower 10. Lawrence Livermore National Laboratory LLNL-PRES-77388610 11. PassiveRibbon FiberYb3+ Ribbon FiberUV Rad HardQualification FiberLawrence Livermore National Laboratory LLNL-PRES-77388611215 m200 m250 m250 mHollow Core Cane(preform)Negative CurvatureCorefor mid-IR 12. Hollow core waveguides for high power transport Short wavelength fiber lasers (