Tunable Lasers High-performance narrow-band optical source

• Wavelength: 1260-1350 nm (Option A13) or 1520-1620 nm (Option A16)
• Max. power: > +24 dBm peak (Option A13) or > +20 dBm (Option A16)
• Sweep speeds: up to 200 nm/s, bidirectional
• Signal to SSE ratio: ≥ 50 dB/nm typical
• Absolute wavelength accuracy: ±1.5 pm typical (also during continuous sweeps)

The new Keysight N7774C Ultra-High Power Tunable Laser provides the highest output power in the N777-C Family of Tunable Laser Sources. It is particularly suitable for use with test configurations that require splitting a signal power between optical paths that lead to multiple devices under test (DUT), or with complex test setups that need to deal with a large loss budget. Equipped with polarization maintaining fiber, the N7774C is a good match for testing and developing components with Silicon Photonics/ integrated photonics technology.

Two-way sweeps up to 200 nm/s speed with sub-picometer repeatability and without impacting the specified dynamic accuracy accelerate wavelength-dependent alignment processes and the automated calibration of wavelength-selective devices. Shorter time to testing and faster swept-wavelength tests help reduce test cost per device, improve test margins and lower the cost of ownership.

The N7774C sports top-of-the-line wavelength accuracy – enabled by its high-resolution wavelength reference unit that provides real-time tracking and control and includes a gas cell for excellent long-term stability and self-adjustment capability.

Like N7776C and N7778C, the new ultra-high power tunable laser is supported by the photonic application suite software for spectral measurements of insertion loss, polarization dependent loss and dispersion. In combination with the N774xC multiport power meters and the N7786C polarization synthesizer, these lasers provide optimal swept-wavelength accuracy and excellent dynamic range for measuring both filter stop bands and pass bands.

The wavelength tuning performance of the tunable laser family has been enhanced to provide default fine tuning without overshoot. No separate fine-tuning control is needed for smooth tuning with 0.1 pm resolution, due to automatic coordination of the motor and piezoelectric-actuator. This simplifies wavelength-optimization procedures.

The remote user interface on the instrument is accessible with just a web browser, either via LAN or via USB connection. An optional touch-screen display provides local operator access and displays current operating parameters.