N7711A, N7714A Tunable Laser Sources

Data Sheet

Introduction

The Keysight Technologies, Inc. N7711A and N7714A tunable lasers are single-port and four-port sources, available with C-band or L-band wavelength coverage. With high output power up to +15 dBm, narrow linewidth of 100 kHz, gridless and grid-defined wavelength setting, and offset fine-tuning capability, the N7711A and N7714A make them ideal sources for realistic loading of the latest transmission systems.

To owners of Keysight’s proven Lightwave Measurement System the 81950A tunable laser source module offers the same features as the N7711A. The 81950A plugs into the 8163B and 8164B mainframes. For additional information about the 81950A please refer to the Compact Tunable Laser data sheet, publication no. 5988-8518EN.

Seamless wavelength coverage

The new options 3xx remove the wavelength gap between the C-band and L-band channels.

Operation Modes

When operated in gridless mode, the wavelength can be set anywhere within its range using the same commands as with other Keysight tunable lasers.

In system loading applications, it may be preferable to grid-tune the lasers like system transmitters, simply by changing the channel index. The channel grid is adjustable to standard ITU-T grid spacing like 50 GHz, and to arbitrary grids. Likewise, the zero frequency (base channel) of the chosen grid is adjustable. A 12 GHz fine-tuning range allows adjustment of the frequency without interrupting the laser output.

Key specifications and features

- Compact instrument format with one or four ports per unit on one-half 19-inch width and one-unit height;

- Flexible configuration of four-port model between C- and L-band channels (N7714A);

- Adjustable to any wavelength grid (ITU-T 100 GHz, 50 GHz, 25 GHz, and arbitrary grids); and gridless tuning;

- Narrow linewidth less than 100 kHz and offset-grid tuning greater than ± 6 GHz ideally suited for coherent mixing applications and new complex modulation formats; and

- Up to +15 dBm output power, with 8 dB power adjustment range.

- Equipped with Panda polarization maintaining fiber.

The 77-Series Optical Test Instruments

Targeted for high test throughput, lowest cost-per-channel, and narrow footprint, all members of Keysight’s 77-Series optical test instruments are built on a common platform and a common PC-based user interface.

A complete set of control interfaces including LAN, USB2.0 and GPIB simplifies integration with manufacturing control systems. Code compatible to Keysight’s Lightwave Measurement System modules, the new instrument generation can serve as plug-in replacements in existing test solutions.

All 77-series optical test instruments share:

- “just–enough-test” approach with lowest hardware overhead;

- LAN, USB and GPIB interfaces;

- Built-in international power supply;

- SCPI command set, compatible with existing instrument categories for easy drop-in replacement; and

- Keysight IO libraries and a PC-based graphical user interface.

The N77-Viewer: An easy-to-use graphical user interface

The N77’s Window’s based graphical user interface offers flexible and extensive control of the instrument.

- Easy switching between channels with tabs.

- Overview window with all channels at a glance.

- Two instrument configurations can be stored and recalled.

- Turn on and off the laser output with one click.

- Choose between setting a laser’s wavelength, frequency, channel or its output power.