The HP/Agilent 81640B Tunable Laser Source delivers precise, continuous optical output across the C- and L-bands for demanding DWDM and photonics testing. Operating from 1495 to 1640 nm with maximum output power of +4 dBm, this module provides mode-hop-free tuning, ultra-low spectral linewidth, and dual outputs optimized for either high dynamic range or power delivery. Built-in wavelength control and exceptional frequency stability make it ideal for component characterization and optical system validation.
Technical Specifications
• Wavelength Range: 1495 to 1640 nm
• Maximum Output Power: +4 dBm (Output 2)
• Output 1 (Low SSE): > –13 dBm across full range
• Wavelength Resolution: 0.1 pm (12.5 MHz at 1550 nm)
• Absolute Wavelength Accuracy: ± 10 pm
• Wavelength Repeatability: 0.5 pm typical
• Wavelength Stability: 50 MHz at 1510–1620 nm with coherent control on
• Optical Power Stability: ± 0.01 dB
• Maximum Tuning Speed: 80 nm/s
• Signal-to-SSE Ratio: > 55 dB (Output 1, 1520–1610 nm)
• Fiber Type: Single-mode 9/125 µm
• Optical Connector: Panda-type angled contact; compatible with E-2000 APC, SC/APC, FC/APC
– Key Features
• Continuous mode-hop-free tuning across entire wavelength spectrum
• Dual optical outputs: one prioritizing low SSE (> 55 dB), one delivering maximum power
• Real-time integrated wavelength meter for closed-loop control
• Polarization-maintaining fiber option (Option 072) available
• 0.1 pm wavelength resolution enables precise spectral characterization
– Typical Applications
• DWDM component testing and validation
• Optical amplifier characterization
• Integrated optical device measurement
• Spectral analysis and photonics research
– Compatibility & Integration
Designed as a plug-in module for Agilent 8164B lightwave mainframes. GPIB control interface. Supports polarization-maintaining and standard single-mode fiber outputs with angled-contact connectors.


















