Keysight (Agilent/HP) 81989A Tunable Laser (S+C band)

The Keysight (Agilent/HP) 81989A Tunable Laser (S+C band) is a high-power, compact external-cavity laser instrument designed for precision wavelength tuning, signal generation, and stimulus output in fiber optic networks and DWDM component testing. It supports a continuous tunable wavelength range from 1465 nm to 1575 nm covering the full S+C transmission band, mode-hop free sweeping with continuous output power during tuning, output power up to +14.5 dBm, an integrated wavelength control loop with built-in wavemeter for reduced measurement uncertainty, and polarization-maintaining fiber output, enabling reliable saturation testing of optical amplifiers, characterization of nonlinear effects, and verification of broadband passive optical components in single-channel and DWDM test setups. With a single-slot modular form factor compatible with the Keysight 8163A/B, 8164A/B, and 8166A/B lightwave measurement mainframes, it delivers flexible, cost-effective, high-power characterization for advanced optical amplifier, R&D, and manufacturing applications. https://assetrelay.com/assetrelay_pdf/Agilent_TLS_819xxx_specsheet.pdf