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Volume 82, Issue 1, January 2011
In 2000 the first mirrorsuspensions to use a quasi-monolithic final stage were installed at the GEO600 detector site outside Hannover, pioneering the use of fused silicasuspension fibers in long baseline interferometric detectors to reduce suspensionthermal noise. Since that time, development of the production methods of fused silica fibers has continued. We present here a review of a novel CO laser-based fiber pulling machine developed for the production of fused silicasuspensions for the next generation of interferometric gravitational wave detectors and for use in experiments requiring low thermal noisesuspensions. We discuss tolerances, strengths, and thermal noise performance requirements for the next generation of gravitational wave detectors.Measurements made on fibers produced using this machine show a 0.8% variation in vertical stiffness and 0.05% tolerance on length, with average strengths exceeding 4 GPa, and mechanical dissipation which meets the requirements for Advanced LIGOthermal noise performance.