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Quartz Glass Rods

Quartz rods are essential for optical communication devices, matching optical fibers in thermal expansion and excelling in precision, hardness, and environmental resistance. Utilized in optical couplers, fiber welding protectors, and lasers, their fabrication involves cleaning, then heating in a graphite furnace under inert gas, followed by pulling, drawing, and cutting. This process yields transparent, dimensionally accurate rods ideal for mass production, significantly lowering costs and enhancing quality.

quartz glass rod
quartz rods
fused quartz rod

Specification of Quartz Rods

Quartz rod product parameter table
ProjectIndicator requirements
Material propertiesQuartz Quartz, Silicon Dioxide (SiO2) content>99.9%
Density: 2.2×10³Kg/m³ Thermal expansion coefficient: 5.5×10-7cm/cm℃
Compressive strength: 4.8×107 Pa (N/m²) (7000psi)
Tensile strength: >1.1×109 Pa (160000psi)
Softening point: 1683℃ Annealing point: 1215℃ Deformation point: 1120℃
Refractive index: 1.4585
Dielectric constant: 3.75 (@1MHz) Insulation strength: 5×107V/m
Dimensional accuracyOuter diameter OD: φ0.5≤OD≤φ10mm
Length L: L=0.5~100mm±0.2mm, the length can be processed according to customer requirements
Surface requirementsThe product has no cracks, both end surfaces are ground surfaces, and the cylindrical surface is transparent.

Dimension Drawing of Quartz Rods

Dimension Drawing of Quartz Rods

Features of Quartz Rods

Features of Quartz Rods
  • Material: high-purity fused quartz, silicon dioxide (SiO2) content >99.9%, softening point >1650°C, high strength, high wear resistance, high light transmittance.

  • Usage Properties: The quartz rod is melted and drawn at high temperature. The surface is transparent, which eliminates surface micro-cracks and local surface hidden cracks in the optical fiber positioning holes. The quartz rod has high strength and is not easy to crack and break when dispensing glue to fix the optical fiber. The dispensing is qualified. The rate is high.

  • Environmental Properties: The hydroelectric composite wire drawing production process does not use any chemical solvents, and the material and production process do not contain or involve controlled substances required by the EU RoHS directive and Reach regulations.

  • Quality Stability: Through the closed-loop control of the CNC host, feeding mechanism, traction mechanism, and laser rangefinder, quartz rods with the required diameter and inner diameter can be accurately drawn. The precision consistency is very high and the production stability is excellent.

  • Customized Structure: Using a high-precision grinder to finely grind the quartz rod plane, various structures can be customized to meet the requirements for connecting and fixing optical devices.

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