Semiconductor & Photonic Grade

Custom U-Shape Quartz Substrate Supplier & Factories

Precision CNC micro-grooving, high-purity JGS1/JGS2/JGS3 fused silica fabrication, and cleanroom-compliant optical assemblies tailored to global OEM specifications.

Micron-Level CNC Milling Ultra-Low Thermal Expansion ISO 9001 & RoHS Certified Global Direct Export
Product Catalog

Precision Quartz & Optical Components

Engineered to extreme dimensional accuracy for semiconductor wafer handling, fiber optic coupling, and advanced laser systems.

Technical Whitepaper

Engineering Architecture of U-Shape Quartz Substrates

A comprehensive examination of thermo-mechanical stability, precision micro-milling geometry, and optical transmission parameters.

Material Purity & Synthetics

U-Shape quartz substrates utilize synthetic fused silica (JGS1) and high-purity natural fused quartz (JGS2/JGS3) with silica content surpassing 99.999% (5N grade). This prevents contamination in microfluidic channels and avoids interstitial bubble formation during prolonged ultraviolet and deep-UV exposure.

Ultra-Precision CNC Profiling

Fabricating the internal channel of a U-shape geometry requires dedicated diamond ultrasonic tooling. We achieve slot width and bottom radius tolerances within ±0.005 mm, with Ra values down to 0.2 nm on polished optical walls to minimize light scattering and fluid friction.

Thermo-Mechanical Resilience

With an extremely low coefficient of thermal expansion (5.5 × 10⁻⁷ /°C), our U-shape substrates maintain absolute geometric fidelity under thermal cycles from cryogenic conditions up to 1,150°C continuous service, preventing channel warping or optical misalignment.

Performance Attribute JGS1 (UV Synthetic Fused Silica) JGS2 (Optical Fused Quartz) JGS3 (Infrared Fused Quartz)
Transmission Range 185 nm – 2,500 nm (Deep UV to NIR) 220 nm – 2,500 nm (UV-Vis) 260 nm – 3,500 nm (NIR to Mid-IR)
Hydroxyl (OH⁻) Content < 2 ppm (Standard) or High OH Available < 30 ppm < 5 ppm (Zero Water Peak)
Channel Width Tolerance ±0.003 mm to ±0.01 mm ±0.005 mm to ±0.015 mm ±0.005 mm to ±0.02 mm
Surface Roughness (Channel Ra) < 0.4 nm (Flame / Chemical Polish) < 0.8 nm (Diamond Micro-Lapping) < 1.0 nm (Precision Ultrasonic CNC)
Refractive Index (nd @ 589.3 nm) 1.4585 1.4584 1.4584
Continuous Heat Resistance 1,100 °C (Annealing pt: 1,140 °C) 1,150 °C (Softening pt: 1,680 °C) 1,150 °C (Softening pt: 1,680 °C)
Compliance & Assurance

Localized Support & Global Regulatory Compliance

Bridging Chinese precision fabrication with European, North American, and Asian-Pacific regulatory frameworks and engineering requirements.

RoHS & REACH Compliance

Full material documentation and third-party laboratory verification (SGS/TÜV) ensuring 100% heavy-metal-free and halogenous-compliant raw quartz blanks.

Bilingual DFM Engineering

Our Tianjin engineering team works directly in STEP, IGES, DWG, and PDF formats, delivering localized Design-for-Manufacturability feedback within 24 hours.

Cleanroom Export Packaging

Packed under Class 1,000 / Class 10,000 cleanroom environments using static-shielded, lint-free vacuum blisters to eliminate transit particulates.

Consignment & Buffer Stocks

Flexible procurement arrangements including Kanban scheduling, safety stock buffering, and door-to-door express customs clearance worldwide.

Direct Factory Advantage

Integrated Chinese Factory Supply Chain

Combining primary quartz ingot drawing, cold CNC precision machining, and hot oxyhydrogen flame processing under one certified roof in Tianjin.

15+
Years Operational Since 2010
3,000+
m² Specialized Plant Area
120+
Advanced CNC & Polishing Units
<24h
DFM Engineering Assessment

Single-Facility Quality Loop

Unlike trading distributors, BY Photonics runs ingot cutting, grinding, slot micro-milling, flame welding, optical polishing, and Zygo laser interferometric inspection without third-party hand-offs.

Cost-Effective Scale Production

Direct sourcing of domestic raw quartz blocks and advanced automated multi-axis grinding benches ensures a 30% to 50% cost advantage compared to Western boutique optics fabricators.

Prototype to Multi-Thousand Batches

Full agility to manufacture quick-turn pilot runs (1-10 pieces) for academic and photonics R&D, followed by stable high-volume monthly supply for Tier-1 equipment manufacturers.

Market Evolution

Global Sourcing Demands & Industry Trends

Strategic movements driving the rapid adoption of custom-grooved quartz substrates across high-reliability systems.

Optical Interconnects & CPO Integration

With co-packaged optics (CPO) and silicon photonics gaining rapid momentum in hyperscale AI data centers, U-groove and arrayed quartz substrates provide crucial non-conductive, low-loss optical fiber alignment platforms capable of sub-micron pitch consistency.

Supply Chain Resiliency & Secondary Sourcing

International OEMs are mitigating geopolitical bottlenecks by diversifying away from single-source domestic vendors. Our factory functions as a vetted, ISO-governed direct manufacturing partner with robust dual-sourcing pipelines for critical quartzware.

Sub-Millimeter Microfluidic Integration

Life-science sequencing devices demand seamless monolithic glass designs that avoid polymer adhesives. U-channel quartz substrates sealed with fusion bonding provide pristine, chemically inert liquid avenues resistant to high-pressure enzymatic lysis.

Field Performance

Engineered Application Environments

Where precision-grooved U-shape quartz substrates function as vital structural and optical elements.

Fiber Optic Couplers

Serving as passive V-groove and U-groove alignment fixtures for planar lightwave circuits (PLC), multi-channel fiber arrays, and collimator fixtures demanding near-zero thermal drift.

Lab-on-a-Chip Biochips

Ideal for fluorescence spectroscopy detection cells, capillary electrophoresis, and micro-reaction flow cells requiring broadband UV transparency down to 190 nm.

Semiconductor Sensors

Employed as thermal standoff substrates, vacuum feedthrough windows, and ion beam inspection stages where electrical insulation and chemical inertness are non-negotiable.

High-Power Laser Cavities

Utilized as fluid cooling channels and beam dump holders in solid-state and diode laser heads where ordinary borosilicate glass fractures under localized thermal lensing.

Engineering Knowledge Base

Frequently Asked Questions

Comprehensive technical guidance for procurement officers, optical designers, and mechanical engineers.

What are the critical machining tolerances achievable for custom U-shape channels?
Depending on channel depth and width, our CNC ultrasonic diamond milling stations achieve channel width and depth tolerances between ±0.003 mm and ±0.010 mm. Bottom radii can be shaped to precision semicircular profiles down to R0.05 mm or sharp 90-degree corners with micro-undercuts.
How do I select between JGS1, JGS2, and JGS3 quartz grades for my substrate?
Select JGS1 synthetic silica if your system operates in the deep ultraviolet spectrum (185–260 nm) or requires negligible fluorescence (e.g., DNA sequencing). Choose JGS2 for general optics, visible lasers, and thermal furnace carriers. Select JGS3 when operating in the infrared wavelength band (up to 3,500 nm) where water-peak absorption bands at 2,730 nm must be completely eliminated.
Can the inner channel walls of the U-shape substrate be optically polished?
Yes. While standard micro-milling leaves a fine frosted texture (Ra 0.4–0.8 μm), we utilize chemical etching, specialized miniature brush polishing, and precision oxyhydrogen flame polishing techniques to achieve transparent, scratch-free finishes (Ra < 0.05 μm) when optical path clarity is necessary.
What drawing formats do you require, and how quickly is quotation feedback provided?
We accept 3D formats (STEP, IGES) and 2D engineering drawings (DWG, DXF, or dimensioned vector PDF). Our application engineers evaluate mechanical feasibility, recommend optimal quartz grades, and return formal engineering quotes with lead times within 24 hours on business days.
How are brittle quartz parts secured against micro-fractures during international transit?
Every substrate undergoes post-annealing stress relief to remove residual thermal stresses. Parts are ultrasonically cleansed, enclosed in individual sealed anti-static carriers or gel-boxes, wrapped in multi-layer shock-dampening foam, and crated in heavy-duty export containers guaranteed for air express logistics (DHL, FedEx, UPS).
Factory Line

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