The Agilent/Keysight 8155A is a narrow linewidth laser diode source engineered for precision optical testing in telecommunications applications. It delivers excellent short- and long-term stability with flexible output modes and high-speed modulation capability.
Technical Specifications
• Laser Type: Narrow Linewidth Laser Diode Source
• Wavelength Options: 1300 nm (optional), 1550 nm (optional)
• Output Modes: Continuous Wave (CW), 270 Hz chopped light
• External Modulation: Up to 850 MHz
• Stability: Excellent short-term and long-term performance
– Key Features
The 8155A supports dual output modes—standard CW operation for baseline measurements and 270 Hz chopped light for lock-in detection and noise discrimination. External modulation to 850 MHz enables direct signal injection for dynamic performance characterization across high-speed fiber-optic systems. Wavelength selection at 1300 nm or 1550 nm addresses the primary transmission bands for long-haul and metropolitan optical networks.
Dual-wavelength capability eliminates the need for separate instruments when testing systems spanning both C-band and L-band windows. The combination of narrow linewidth output and stable optical power ensures repeatable spectral characterization and minimizes measurement drift during extended test sessions.
– Typical Applications
• Signal performance testing on fast telecommunication links
• Component and subsystem characterization in optical networks
• Spectral analysis and linewidth measurement
• Dynamic modulation testing at speeds to 850 MHz
– Compatibility & Integration
The 8155A integrates into Agilent/Keysight optical test platforms and operates as a standalone laser source for external measurement systems. Its modulation bandwidth and multi-wavelength architecture support both legacy and fiber-optic test configurations.
