4-Inch 6-Inch LNOI Wafers The Perfect Choice for Compact and High-Performance Optical Communication

‌Revolutionize Photonics with Ultra-Low-Loss LNOI Wafers‌

‌Next-Gen Lithium Niobate-on-Insulator (LNOI) Platform‌
Unlock unprecedented performance in integrated photonics with our cutting-edge LNOI wafers, engineered for ultra-low optical loss and sub-nanometer surface roughness . Combining stoichiometric LiNbO₃ thin films with thermally oxidized SiO₂ buried layers, our wafers deliver ‌>30x higher nonlinear efficiency‌ than conventional bulk crystals, while enabling CMOS-compatible fabrication.

‌Key Advantages‌
✓ ‌Breakthrough EO Performance‌: Achieve ‌>100 GHz modulation bandwidth‌ with r₃₃ >30 pm/V, ideal for 800G/1.6T coherent transceivers.
✓ ‌Quantum-Ready Precision‌: Custom periodic poling (PPLN) with <5 nm domain error for entangled photon generation.
✓ ‌Power-Hardened Design‌: Withstand >10 MW/cm² optical intensity (Telcordia GR-468 certified).

‌Applications‌
▷ 5G/6G ultra-compact EO modulators
▷ Topological photonic circuits & optical computing
▷ Quantum frequency converters (C/L-band to telecom band)
▷ High-sensitivity LiDAR photodetectors

‌Technical Specifications‌
• Wafer Size: 100/150 mm diameter (2" to 6" customizable)
• LiNbO₃ Layer: X-cut/Z-cut, thickness 300±5 nm (standard)
• Buried Oxide: 1-3 μm SiO₂, breakdown voltage >200 V/μm
• Substrate: High-resistivity Si (>5 kΩ·cm)

Founded in 1999, Hangzhou Freqcontrol Electronic Technology Ltd. is a China leading manufacturer of piezoelectric crystal wafers, substrates, components and single crystal growth. We, known as the "CQT Group" in global market, headquartered in Hangzhou, China, empowered by its manufacturing sites in Shanghai, Jiaxing and Deqin etc.

Our products are mainly used in RF Telecom, Semiconductor, Biotech, Optical engineering and frequency control industries. The monthly production capacity: 500K single quartz blanks (SC, AT, IT, FC, etc.), 20K quartz wafers (AT, ST, X, Z, etc.), 10K LiNbO3 wafers (3~8 inch), 10K glass wafers (Fused silica, Borofloat33, Corning, etc.), 8K LiTaO3 wafers (3~6 inch), and 100K filters/oscillators (VCXO, TCXO).

Our company vision is to be a reliable primary Microelectronic substrates supplier in today's world.

The CQT Group consists of five major plants with total floor area over 10,000 m². Our production machines include crystal growth furnace, wire saw, X-ray orientation, grinding machine, polishing machine, chamfering machine, CNC, REDOX chambers etc. Inspection equipment include Flatmaster 200, AOI, profilometer, optical imager, X-ray inspector etc. We are also equipped with Class 100 and 1000 clean rooms.

The CQT group is primarily known as the expert of hexagonal crystals, We master the manufacturing process of single & doubly rotated quartz blanks, and we can provide quartz of any orientation cut whether given by IRE , Miller index, Euler angle or conventional sign.

In addition to our leading quartz blank manufacturing capabilities, the last decade sees our major technological breakthroughs. We overcome the 3~6 inch ultra-thin wafer mass production barrier, obtained the reduction technology of black LiNbO3 & LiTaO3 wafers, and achieved 8 inch LiNbO3 wafer mass production successfully.

Competitive Advantages

1. Reliable partner: We are in this business for over 30 years, served over 200 customers in 20+ countries.
2. Complete production line: We do crystal orientation, wire cut, grinding, polishing, etching, flat/notch, surface inspecting, x-ray detecting etc. all in house!
3. State-of-the-art cleanroom: We have 3 Class1000 clean room, 1 Class100 work desk, complete wafer cleaning & drying process.
4. Efficient customer service: Prompt RFQ response & Order confirmation in 24 hrs, customization lead time in 4 weeks.