HP / Agilent 81553SM LASER SOURCE MODULE 1550NM

The HP/Agilent 81553SM is a single-mode Fabry-Perot laser source module operating at 1550 nm, designed for optical test and measurement in telecommunications and research environments. It delivers stable, precise optical signals with adjustable output power and built-in modulation capabilities. The module integrates with HP/Agilent 8153A, 8163A, 8164A, and 8166A lightwave mainframes via proprietary connector interface.

– Technical Specifications

• Laser Type: InGaAsP Fabry-Perot
• Central Wavelength: 1550 nm (±20 nm tolerance)
• Output Power: > 0 dBm minimum; 0.001 W maximum
• Spectral Bandwidth: 2 nm to < 4 nm rms
• CW Stability (15 min, constant temperature): ±0.003 dB
• Fiber Output: Single-mode, 9/125 µm
• Internal Attenuation: Adjustable 0–6 dB in 0.1 dB steps
• Modulation Frequencies: 270 Hz, 1 kHz, 2 kHz (internal)
• Digital Modulation: 270 Hz, 1 kHz (selectable)
• Modulation Format: 50% duty cycle pulse-shaped output

– Key Features

• Stable long-term and short-term performance
• Fine-resolution attenuation control (0.1 dB steps) for precise power adjustment
• Multiple internal modulation options for signal generation and testing
• 20-minute warm-up recommended for optimal stability in measurement applications
• Specifications valid at 0.0 dB attenuation setting, measured at 2 m fiber cable end with Diamond HMS-10 connectors

– Typical Applications

• Optical fiber telecommunications testing
• Wavelength-dependent measurement and characterization
• Light source for optical component validation
• Research and laboratory optical signal generation

– Compatibility & Integration

Designed exclusively for HP/Agilent 8153A, 8163A, 8164A, and 8166A lightwave mainframes. Requires a connector interface module (81000xI series) for operation.