The Photonetics Osics DFB-1555.75-P13 is a distributed feedback laser diode module engineered for precision telecommunications and optical sensing applications. Operating at 1555.75 nm with single-frequency emission, this module delivers +13 dBm output power and maintains exceptional wavelength stability of ±0.005 nm over 24 hours. The laser exhibits a linewidth below 10 MHz and side mode suppression exceeding 35 dB, making it suitable for demanding test and measurement environments requiring stable, spectrally pure light sources.
Technical Specifications
Optical Performance
• Wavelength: 1555.75 nm
• Wavelength accuracy: ±0.03 nm
• Wavelength stability: ±0.005 nm over 1 hour and 24 hours (typical)
• Tuning range: Approximately 1.6 nm to 1.8 nm
• Laser linewidth: 35 dB (45 dB typical)
• Optical isolation: > 30 dB
• Return loss: 60 dB
• Relative intensity noise: 17 dB
• Output power: Typically +13 dBm
Electrical Specifications
• Operating current: Typically 500 mA (max 800 mA)
• Threshold current: Typically 45 mA
• Forward voltage: 1.7 V to 1.9 V
• Slope efficiency: 0.26 W/A
• Current tuning: 0.007 nm/mA
• Temperature tuning: 0.10 nm/°C
Modulation & Control
• Digital modulation: 1 Hz to 1 MHz (internal & external)
• Analog modulation: 150 Hz to 150 MHz
– Key Features
• Polarization-maintaining fiber output with FC/APC connector (narrow key)
• Stimulated Brillouin scattering suppression capability
• Typical warm-up time: 1 hour (maximum 2 hours)
• Operating temperature range: +15 to +35°C
• Module weight: Approximately 0.7 kg
– Typical Applications
• Telecommunications testing and CWDM channel characterization
• Optical sensing and supervisory channel applications
• OTDR laser source implementations
• Silicon photonics LR4 and ER4 testing
– Compatibility & Integration
Designed as a plug-in module for the EXFO OSICS mainframe platform, supporting up to 8 interchangeable modules within a single chassis.
