Agilent / Keysight N7711A Single-Port Tunable Laser Up to +15 dBm C-band and L-band

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.