The HP/Agilent 81554SM is a dual-wavelength Fabry-Perot laser source module for precision optical testing in telecommunications and photonics. Operating at 1310 nm and 1550 nm—the primary fiber optic communication bands—this InGaAsP laser delivers stable optical signals with inherent insensitivity to back reflections. The module integrates into Agilent/HP Lightwave Multimeter mainframes as a plug-in card, enabling rapid characterization of optical components and systems without requiring internal access for performance verification.
Technical Specifications
• Laser Type: Fabry-Perot (FP), InGaAsP
• Wavelengths: 1310 nm ± 20 nm, 1550 nm ± 20 nm
• Output Power: Greater than −1 dBm
• Spectral Bandwidth: Less than 2.5 nm RMS
• Optical Fiber: Single-mode, 9/125 µm
• Beam Diameter: 9 µm
• Numerical Aperture: 0.1
• Output Attenuation: 0 to 6 dB in 0.1 dB steps
• Modulation: Internal selection at 270 Hz, 1 kHz, or 2 kHz; 50% duty cycle with pulse shaping
• Laser Safety Class: 3A (IEC 825-1, non-USA); Class 1 (21 CFR 1040.10, USA)
• Long- and Short-Term Stability: High; CW stability doubles within one minute of warm-up
• Warm-Up Time: 20 minutes minimum to meet specifications
• Storage/Shipment Temperature: 0°C to +70°C
• Operating Environment: Within HP 8153A mainframe limits
– Key Features
• Dual-wavelength operation eliminates need for separate laser modules
• Fabry-Perot design provides robustness against back reflections
• Fine output control via 0.1 dB attenuation steps
• Selectable modulation for dynamic and steady-state testing
• Performance verification without instrument disassembly
– Typical Applications
• Optical component characterization across C and L communication bands
• Fiber optic system evaluation and commissioning
• Wavelength-dependent transmission testing
• Signal integrity assessment in multiwavelength networks
– Compatibility & Integration
Installs as a plug-in module in HP/Agilent 8153A, 8163A, 8164, and 8166 series mainframes. Standard Agilent optical connectors (HP 81000xI Series) sold separately. Module weight: 3 lbs.
