The Keysight N7711A is a single-port tunable laser source delivering continuous wavelength coverage across the C-band and L-band with output power up to +15 dBm. Engineered for telecommunications component testing, optical network characterization, and coherent mixing applications, it combines high wavelength accuracy, exceptional stability, and narrow linewidth in a compact form factor.
Technical Specifications
Wavelength and Tuning
• C-band: 1527.60 nm to 1565.50 nm (196.25 THz to 191.50 THz)
• L-band: 1570.01 nm to 1608.76 nm (190.95 THz to 186.35 THz)
• Frequency resolution: 100 MHz (0.8 pm at 1550 nm)
• Fine tuning range: ±6 GHz typical
• Fine tuning resolution: 1 MHz typical
• Absolute wavelength accuracy: ±22 pm (±2.5 GHz)
• Relative wavelength accuracy: ±12 pm (±1.5 GHz)
• Wavelength repeatability: ±2.5 pm (±0.3 GHz) typical
• Wavelength stability: ±2.5 pm (±0.3 GHz) over 24 hours; ±0.5 pm over 1 minute typical
• Tuning time: < 30 seconds typical
• Grid spacing: ITU-T (100 GHz, 50 GHz, 25 GHz) or arbitrary; gridless tuning capable
• Warm-up time: 1 hour for full specification compliance
Optical Output Power
• Maximum output power: ≥ +15 dBm typical; ≥ +13.5 dBm minimum guaranteed
• Power adjustment range: 8 dB
• Power setting resolution: 0.1 dB
• Power stability: ±0.03 dB over 24 hours and 1 hour typical
• Power flatness: ±0.2 dB typical across full wavelength range
• Power repeatability: ±0.08 dB typical
• Residual output power (shutter closed): ≤ –45 dBm
Spectral Characteristics
• Linewidth: < 100 kHz typical
• Side mode suppression ratio: 50 dB typical
• Source spontaneous emission: 50 dB/nm typical at maximum output; 60 dB/0.1 nm typical
• Relative intensity noise: –145 dB/Hz typical (10 MHz to 40 GHz)
SBS Suppression
• FM modulation range: 0 GHz to 1 GHz
• Dither frequency: 20.8 kHz
– Key Features
• Dual-band operation with seamless coverage options
• Offset fine-tuning exceeding ±6 GHz
• Exceptional wavelength stability and repeatability
• Flat power response across C and L bands
• Low relative intensity noise for complex modulation formats
• Integrated SBS suppression capability
– Typical Applications
• Component characterization and testing
• Optical network performance validation
• Coherent detection system research
• WDM system development and verification
– Compatibility & Integration
9/125 µm Panda polarization-maintaining fiber connectivity. Control interfaces support integration into manufacturing test systems and laboratory setups.
