The HP/Agilent 81608A is a high-power, low-noise tunable laser source designed for precision optical signal generation across O-, S-, C-, and L-bands. This value-line module delivers peak output power exceeding +12 dBm to +13 dBm with exceptional signal-to-spontaneous emission ratios of ≥75 dB/nm typical, enabling advanced spectral measurements and laboratory testing. Wavelength tuning spans up to 200 nm/s bidirectionally with mode-hop-free operation across the full range. Absolute wavelength accuracy reaches ±5 pm static and ±10 pm sweeping, with repeatability of ±1.5 pm at full-speed two-way sweeps. Fine wavelength resolution of 0.1 pm (17.5 MHz at 1310 nm, 12.5 MHz at 1550 nm) supports detailed spectral analysis. Power stability remains exceptional at ±0.03 dB over 24 hours and ±0.01 dB over one hour. The laser integrates into the Keysight 8164B Lightwave Measurement System mainframe with N7700A Photonic Application Suite software, offering instrument-level SCPI command compatibility and 81600B laser command support.
Technical Specifications
• Wavelength Range Options: 1240–1380 nm (Option 113), 1340–1495 nm, 1450–1650 nm (Option 216), 1490–1640 nm (Option 116)
• Peak Output Power: >+12 dBm typical (Options 114, 116, 216); >+13 dBm typical (Option 113); user-adjustable down to 0 dBm
• Signal-to-SSE Ratio: ≥75 dB/nm typical; better than 80 dB/nm typical for select configurations
• Absolute Wavelength Accuracy: ±5 pm static, ±10 pm sweeping
• Relative Wavelength Accuracy: ±10 pm sweeping
• Wavelength Repeatability: ±1.5 pm at two-way sweeps up to 200 nm/s; ±1 pm for other configurations
• Wavelength Resolution: 0.1 pm (17.5 MHz at 1310 nm, 12.5 MHz at 1550 nm)
• Sweep Speed: Up to 200 nm/s bidirectional, mode-hop free
• Power Stability: ±0.03 dB over 24 hours; ±0.01 dB over one hour
• Optical Output: Single PMF output with angled contact connector
– Key Features
• Narrow linewidth laser with low spontaneous emission noise floor
• Built-in gas cell and self-adjustment mechanisms for long-term stability
• Full-speed swept wavelength accuracy maintained during bidirectional tuning
– Compatibility & Integration
• Keysight 8164B Lightwave Measurement System mainframe
• N7700A Photonic Application Suite software
• 81600B laser command set compatibility
• SCPI instrument-level commands
