Agilent/Keysight 81607A Tunable Laser Module (1260–1360 nm)

The Keysight 81607A is a plug-in tunable laser source module for the 8164A and 8164B Lightwave Measurement System mainframes. Operating across 1260–1360 nm, this Value Line module delivers narrow linewidth performance and low spontaneous emission (SSE) for high dynamic range optical component characterization. It supports bidirectional wavelength sweeps to 200 nm/s with mode-hop-free tuning across the full range. Absolute wavelength accuracy of ±3 pm typical and repeatability of ±1 pm typical enable precise spectral measurements of insertion loss, polarization-dependent loss, and dispersion. The module integrates with the Keysight N7700A photonic application suite for automated testing workflows.

– Technical Specifications

• Wavelength Range: 1260 nm to 1360 nm
• Sweep Speed: Up to 200 nm/s bidirectional
• Maximum Output Power: >+8 dBm peak typical (user-adjustable to 0 dBm minimum)
• Signal-to-SSE Ratio: ≥75 dB/nm typical
• Absolute Wavelength Accuracy: ±3 pm typical
• Wavelength Repeatability: ±1 pm typical at full sweep speeds
• Wavelength Resolution: 0.1 pm (12.5 MHz at 1550 nm reference)
• Spectral Linewidth: >50 MHz typical
• Power Stability: ±0.01 dB (1 hour), ±0.025 dB (24 hours)
• Power Flatness vs. Wavelength: ±0.1 dB typical
• Mode-Hop-Free Tuning: Full wavelength range
• Warm-up Time: 60 minutes initial; 30 minutes after prior temperature storage

– Key Features

• Continuous sweep across full wavelength range at speeds ≤50 nm/s
• Built-in gas cell with self-adjustment for long-term wavelength stability
• PMF output connector (straight contact options available)
• Operating temperature: +10 °C to +35 °C
• Storage temperature: -40 °C to +70 °C

– Typical Applications

• Automated characterization of passive optical components
• Spectral measurement of broadband sources
• High-throughput wavelength-dependent loss testing
• Polarization-dependent loss and dispersion analysis

– Compatibility & Integration

Designed for 8164A/B Lightwave Measurement System mainframes with 81600B series compatibility using appropriate connector options. Operates with N7700A photonic application suite software for integrated optical measurements.