DG Glass Capillaries

Name: DG Glass Capillaries
Brand: Shenzhen Solar Valley Scitech Development Co., Ltd.

DG Glass Capillaries are precision-engineered components crucial for optical communication systems, crafted from durable borosilicate glass. These capillaries feature exceptional accuracy in their inner diameter (ID±0.001mm) and spacing (S±0.002mm), ensuring high dimensional positioning accuracy for optical fibers. Their excellent physical and chemical properties, coupled with superior ultraviolet (UV) transmission, make them ideal for efficiently positioning and securing two optical fibers side by side using UV adhesive. The capillaries’ fiber-like polishing characteristics simplify the preparation of optical fiber connections. DG Glass Capillaries are widely utilized in various optical devices, including connectors and couplers, offering a reliable solution for advanced optical communication needs.

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Specifications of DG Glass Capillaries

DG Glass Capillaries Product Parameter Table
Project	Indicator Requirements
Material Properties	Material: Borosilicate Glass
	Density: 2.3×103Kg/m3 Thermal Expansion Coefficient: 3.3×10-6cm/cm℃
	Compressive Strength: ＞1.57×108Pa Young's Modulus: 6.76×1010Pa/m2
	Softening Point: 820℃ Annealing Point：560℃ Deformation Point: 520℃
	Refractive Index: 1.47
	Dielectric Constant: 4.9(@1MHz)
Dimensional Accuracy	Outer Diameter: Φ1.00mm, Φ1.80mm, Φ2.00mm, Φ2.50mm Outer Diameter Tolerance: OD±0.005mm, customized according to customer requirements
	Inner Hole Size: Inner Hole Diameter ID: 0.051, 0.081, 0.127 Inner Diameter Tolerance ID: ±0.001mm Spacing Size S: 0.102, 0.162, 0.128, 0.134, 0.138 Spacing S: ±0.002mm The inner hole size and spacing size can be customized according to customer requirements.
	Length: 5mm, 7mm, 15mm, 20mm Length Tolerance: L±0.2mm, or customized according to customer requirements.
	Taper Hole Diameter: Φ0.5±0.15mm, Φ1±0.25mm, or customized according to customer requirements
	Taper Hole Depth: 0.5～1.5mm, 1～2.5mm, or customized according to customer requirements
	Center Hole Position: 0.008mm
Surface Requirements	The cylindrical surface of the product is transparent and has no cracks. The appearance and surface condition meet customer requirements.
	Can be customized according to customer requirements.

Dimension Drawing of DG Glass Capillaries

Features of DG Glass Capillaries

Material: Borosilicate Glass, silica (SiO2) content 80%, softening point >800°C, high strength, high hardness, high light transmittance.
Properties: The glass capillary tube is melted and drawn at high temperature. The surface is transparent, which eliminates local hidden micro-cracks on the surface. It is not easy to crack and break when dispensing glue to fix the optical fiber, and the dispensing qualification rate is high.
The glass capillary tube is transparent and has high UV transmission characteristics. The capillary tube and 2/3/4 optical fibers can be quickly cured and bonded with UV adhesive to fix and position the optical fibers.
Environmental performance: The production process does not use any chemical solvents, and the materials and production process do not contain or involve substances controlled by the European Union.
High dimensional accuracy: Glass capillary tubes with various inner hole shapes and structures are accurately made through CNC drawing towers. The optical fiber dimensional tolerance and positioning accuracy are high, and the center distance between 2/3/4 optical fibers can be precisely controlled.