JW3303 High-Performance Optical Attenuator – Accurate, Reliable, Portable

The JW3303 High-Performance Optical Attenuator is a professional-grade handheld device designed for precise and adjustable attenuation of optical signals in single-mode fiber networks. With its compact size, user-friendly interface, and robust engineering, the JW3303 offers telecom technicians and engineers a powerful solution for simulating signal loss, testing receiver sensitivity, and performing routine maintenance in the field or lab.

Whether you are working in a fiber-to-the-home (FTTH) installation, maintaining a dense wavelength division multiplexing (DWDM) system, or running performance tests on optical transceivers, the JW3303 provides the accuracy and control required for modern network environments. Its manual variable attenuation range—up to 60 dB depending on the model—enables users to fine-tune optical power levels with precision, ensuring that optical components operate within their desired specifications.

This device supports the most commonly used wavelengths in telecom: 1310 nm and 1550 nm, optimized for single-mode fiber (SMF). Additionally, it offers high compatibility with SC, FC, or LC connectors, ensuring seamless integration into existing test setups. The JW3303 is also available with interchangeable adapter ports, making it even more versatile across a wide range of applications.

Built with the field technician in mind, the JW3303 is designed to be lightweight, durable, and battery-powered, making it ideal for mobile use. It features a bright LCD screen that displays real-time attenuation values, providing immediate feedback and eliminating guesswork. The simple rotary knob allows smooth and controlled adjustments, while the built-in memory function retains the last-used settings, saving valuable time during repeated tests.

From optical transceiver testing and network calibration to fiber link simulation and system margin testing, the JW3303 offers the flexibility and performance demanded by today’s fiber networks. It meets strict industry standards and is calibrated for reliable, repeatable results—an essential requirement for both lab-grade and field-deployable equipment.

Key Features:

• Wide attenuation range: Up to 60 dB depending on wavelength and configuration
• Broad wavelength support: Optimized for 1310/1550 nm SMF applications
• High precision control: Enables accurate and repeatable optical signal adjustment
• Connector versatility: Compatible with SC, FC, LC adapters (interchangeable)
• User-friendly interface: Rotary knob and LCD for real-time control and visibility
• Portable and durable: Lightweight design with rugged housing for field use
• Power options: Long-lasting battery with optional external DC input
• Memory function: Retains last setting for faster test repetition

Ideal Applications:

• Fiber optic network commissioning and maintenance
• DWDM and CATV system testing
• Transceiver and receiver sensitivity testing
• Margin and stress testing in optical networks
• FTTH, PON, and enterprise fiber link simulation

In summary, the JW3303 High-Performance Optical Attenuator is an indispensable tool for professionals who demand precision, portability, and durability in optical testing. Whether you’re simulating real-world network conditions or fine-tuning system performance, the JW3303 delivers accuracy, reliability, and ease of use every time.

JW3303 High-Performance Optical Attenuator – Technical Data Sheet

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