The HP/Agilent 81607A is a cost-effective tunable laser source (TLS) engineered for optical component testing across the 1490 nm to 1640 nm band. It delivers peak output power greater than +8 dBm with user-adjustable reduction to 0 dBm, combined with low spontaneous emission (SSE) of ≥75 dB/nm typical—a critical advantage for isolation measurements on demanding optical components. Built on the proven 8160xA family architecture, the 81607A features narrow linewidth, bidirectional sweep speeds to 200 nm/s, and wavelength repeatability of ±1 pm typical. An internal gas cell and self-adjustment mechanism ensure long-term stability. Wavelength accuracy is ±3 pm typical. The instrument integrates with DIN 47256/4108 and 81000LI LC optical connectors, operates from 100/120/220/240 Vrms power, and pairs with the N7700A photonic application suite for spectral characterization including insertion loss, polarization-dependent loss, and dispersion measurements.
Technical Specifications
• Wavelength Range: 1490 nm to 1640 nm
• Output Power: Greater than +8 dBm peak typical; user-adjustable down to 0 dBm
• Signal-to-Spontaneous Emission Ratio: ≥75 dB/nm typical
• Wavelength Repeatability: ±1 pm typical (bidirectional sweeps)
• Absolute Wavelength Accuracy: ±3 pm typical
• Sweep Speed: Up to 200 nm/s bidirectional
• Linewidth: Narrow linewidth
• Power Requirements: 100/120/220/240 Vrms, 45 VA max
• Optical Connectors: DIN 47256/4108, 81000LI LC
– Key Features
• Internal gas cell with self-adjustment for stable long-term operation
• Low SSE design optimized for high-resolution spectral measurements
• High wavelength repeatability enables automated passive optical component testing
• Narrow linewidth reduces spectral artifacts in loss measurements
– Typical Applications
• Insertion loss and spectral loss characterization
• Polarization-dependent loss (PDL) measurement
• Dispersion analysis
• Optical component validation and validation
– Compatibility & Integration
The 81607A integrates into the Keysight 8160xA family and operates within the 8164B lightwave measurement system mainframe. Full measurement automation and spectral analysis are enabled through the N7700A photonic application suite when paired with power meters and polarization measurement instruments.


















