HP / Agilent 81672B Tunable Laser Source, Range: 1265-1375 nm

The HP/Agilent 81672B is a tunable laser source module delivering precise optical output across the O-band spectrum. Operating from 1265 nm to 1375 nm with ±10 pm absolute accuracy and 0.1 pm resolution (17.7 MHz at 1300 nm), it enables stable, narrow-linewidth characterization of optical components and systems. The instrument achieves mode-hop-free tuning across its full wavelength range at speeds up to 80 nm/s, with maximum output power of +10 dBm. Polarization-maintaining Panda-type fiber output, a built-in real-time wavelength meter, and continuous sweep capability simplify integration into test benches. Spectral purity reaches 40 dB/nm across 1270–1375 nm with RIN of −145 dB (typical), ensuring minimal noise for demanding measurements. Wavelength stability is maintained for one month within ±4.4 K after automatic wavelength zeroing. ## Technical Specifications • Wavelength Range: 1265 nm to 1375 nm (O-band) • Wavelength Accuracy (Absolute): ±10 pm • Wavelength Resolution: 0.1 pm (17.7 MHz at 1300 nm) • Maximum Tuning Speed: 80 nm/s • Mode-Hop Free Tuning: Full wavelength range • Maximum Output Power: +10 dBm • Signal-to-Spontaneous Emission Ratio: 40 dB/nm (1270–1375 nm) • Relative Intensity Noise: −145 dB (typical) • Output Fiber: Panda-type polarization-maintaining • Wavelength Stability: Valid for one month within ±4.4 K temperature range after automatic zeroing ## Key Features • Built-in real-time wavelength meter for immediate feedback • Continuous sweep through full wavelength range enables automated characterization routines • Fast tuning speed supports dynamic measurement protocols • High spectral purity minimizes measurement artifacts in sensitive applications ## Typical Applications • Optical amplifier testing and gain characterization • Passive optical component evaluation • Integrated photonic device characterization • Fiber-optic R&D and bench-level testing ## Compatibility & Integration The 81672B module requires an 8164A/B Mainframe for operation.