Agilent/Keysight 81608A Tunable Laser Module (1370–1510 nm)

The Keysight 81608A Tunable Laser Module delivers precise wavelength control and stable optical output across the 1370–1510 nm band. This high-performance source combines narrow linewidth, low spontaneous emission, and excellent wavelength repeatability, making it ideal for coherent transmission experiments and manufacturing-floor component testing. The module integrates into the 8164B Lightwave Measurement System mainframe and operates with user-adjustable output power down to 0 dBm, supported by the N7700A photonic application suite.

– Technical Specifications

Wavelength Performance
• Tuning range: 1370–1510 nm (Option 114)
• Absolute accuracy (static): ±5 pm typical
• Absolute accuracy (sweeping): ±10 pm typical
• Wavelength repeatability: ±1.5 pm typical (two-way sweeps to 200 nm/s)
• Sweep speed: up to 200 nm/s bidirectional

Optical Output
• Peak output power: >+12 dBm typical
• Output level range: >±12 dBm
• User-adjustable power down to 0 dBm
• Signal-to-spontaneous emission ratio: ≥75 dB/nm typical
• Power stability: ±0.03 dB over 24 hours

Physical & Environmental
• Dimensions: 16 × 14 × 10 in
• Weight: 25 lbs
• Storage/shipping temperature: -40 °C to +70 °C
• Output connector: PMF with angled contact
• Front panel: two BNC connectors (input/output); maximum ±6 V external voltage rated

– Key Features

• Narrow linewidth with low spontaneous emission for accurate, reliable measurements
• Long-term stability enhanced by built-in gas cell and self-adjustment
• Bidirectional sweep capability maintains ±1.5 pm repeatability at 200 nm/s
• Dry air or nitrogen operation recommended in high water-absorption regions (1350–1420 nm); optional dry air connector available
• Back-loadable design fits 8164B mainframe bottom slot

– Typical Applications

• Coherent transmission system characterization
• Component testing on manufacturing floors
• Spectral measurements via N7700A software integration

– Compatibility & Integration

Module integrates into Keysight 8164B Lightwave Measurement System mainframe; supported by N7700A photonic application suite. Laser classified per IEC 60825-1; compliant with 21 CFR 1040.10 per Laser Notice No. 50 (June 24, 2007).