Advanced Optoelectronic Devices Supplier

About Beijing Rofea Optoelectronics

Located in China’s “Silicon Valley” – Beijing Zhongguancun, Beijing Rofea Optoelectronics Co., Ltd. has been a high-tech enterprise since 2009, dedicated to serving domestic and foreign research institutions, universities, and industrial R&D teams.

We specialize in the independent research, design, manufacturing, and sales of advanced optoelectronic products. Our mission is to provide innovative solutions and personalized services for scientists and engineers pushing the boundaries of photonics and quantum technologies.

R&D Focused Since 2009
Custom Solutions Available
ISO-Compliant Manufacturing
Global Technical Support

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Our Product Range

High-performance optoelectronic components designed for precision, reliability, and integration in cutting-edge scientific and industrial systems.

Intensity Modulator

Thin-film lithium niobate based, available at 780nm, 850nm, 1064nm, 1310nm, and 1550nm wavelengths.

• Low Vπ for high efficiency
• High extinction ratio
• Fiber-pigtailed options

Phase Modulator

Precision phase control for quantum optics and coherent communication systems.

• Wavelengths: 780–1550nm
• Low insertion loss
• High linearity

APD Photodetector

High-sensitivity InGaAs and Si avalanche photodiodes for low-light detection.

• 200MHz to GHz bandwidth
• Free-running or gated
• Low dark current

Acousto-Optic Modulator

Fiber-coupled and free-space AOMs for laser beam control and frequency shifting.

• High diffraction efficiency
• Fast switching
• RF driver included

Bias Point Controller

Automatic stabilization for Mach-Zehnder modulators in long-term operation.

• Real-time feedback
• Plug-and-play interface
• Compatible with all ROF MZMs

RF Amplifier Module

High-gain amplifiers (1–6 GHz) optimized for driving electro-optic modulators.

• 30–40 dB gain
• Low noise figure
• SMA or K-connector options

Optical Delay Device

Manual and motorized variable delay lines for interferometry and synchronization.

• Range: 0–1000 ps
• Precision micrometer control
• SMF-28 or PM fiber options

RF over Fiber (ROF) Link

Analog optical links for microwave signal transmission with low distortion.

• 3GHz / 6GHz bandwidth
• High dynamic range
• Hermetically sealed

Fiber Polarization Controller

Manual and three-loop fiber polarization controllers for polarization management.

• Low insertion loss
• Wide wavelength range
• Compact design

Butterfly SOA / EDFA

Semiconductor and erbium-doped fiber amplifiers for signal boosting.

• C-band or L-band options
• High output power
• TEC-controlled

Tunable Laser Source

Precision narrow-linewidth lasers for coherent communication and sensing.

• Wavelength: 1520–1620nm
• Linewidth <100 kHz
• Fiber-pigtailed output

Customized Products

Tailored optoelectronic modules based on your specifications and integration needs.

• Design & prototyping
• Volume manufacturing
• Testing & validation

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Why Choose ROF?

High Reliability

Our components undergo rigorous testing to ensure long-term stability and performance in demanding environments.

Broad Product Range

From modulators to detectors and amplifiers, we offer a comprehensive suite of optoelectronic building blocks.

Expert Technical Support

Our engineering team provides application guidance, integration support, and troubleshooting assistance.

Competitive Pricing

High-performance components at accessible prices, ideal for academic and industrial budgets.

Fast Delivery

Standard products shipped within 3–7 business days. Custom units delivered on agreed timelines.

Global Reach

Serving research labs and companies in North America, Europe, Asia, and beyond with multilingual support.

Application Cases

Quantum Key Distribution (QKD)

ROF modulators and photodetectors are used in QKD systems to generate and detect single-photon-level signals with high timing precision and low noise.

• Phase and intensity encoding
• GHz-gated APD detection
• Low-jitter synchronization

Optical Communication Field

Our high-speed modulators and RF-over-fiber links enable next-generation optical networks with high bandwidth and low latency.

• 100G+ coherent transmission
• Analog microwave photonics
• Data center interconnects

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