Keysight (Agilent) 8167A Tunable Laser Source

The Keysight (Agilent) 8167A is an O-band tunable laser source engineered for precise optical wavelength selection and stable light output across the 1280–1330 nm window. Designed for optical component characterization, device testing, and photonics research, this instrument delivers absolute wavelength accuracy better than ±0.1 nm with 0.001 nm resolution. Single-mode output with side-mode suppression ensures clean spectral performance for characterizing filters, amplifiers, transceivers, and other optical devices operating in the 1300 nm transmission window.

The unit features HPIB control, LCD display, and optional built-in variable attenuator capability. NIST-traceable calibration and ISO 9001 manufacturing certification provide metrological confidence for telecommunications and photonics applications.

Technical Specifications

• Wavelength range: 1280–1330 nm (O-band)


• Absolute wavelength accuracy: < ±0.1 nm


• Relative wavelength repeatability: ±0.05 nm (typical ±0.02 nm)


• Wavelength resolution: 0.001 nm


• Output power: −4 dBm to −10 dBm


• Side-mode suppression ratio: Clean single-mode output


• Control interface: HPIB


• Display: LCD

Key Features

• High-resolution wavelength tuning for precise optical characterization


• Repeatable output at ±0.05 nm across full tuning range


• Multiple connector options: straight contact, angled contact, or Diamond HMS-10/HP/HRL non-contact connector (Option 023)


• Retrofit-compatible variable attenuator option (Option 003)


• NIST-traceable calibration certification


• ISO 9001 quality manufacturing standard

Typical Applications

• Optical filter and WDM device testing


• Optical amplifier characterization


• Transceiver and receiver performance validation


• Wavelength-dependent component analysis


• Photonics research and development in the O-band window

Compatibility & Integration The 8167A integrates with HPIB-equipped test systems and laboratory automation environments. Its O-band operation targets systems and components optimized for 1300 nm transmission. Connector options accommodate both standard and specialized optical interfaces. The instrument's long operational history provides field-proven reliability for established test setups.