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81980A, 81960A, 81940A, 81989A, 81949A, and 81950A Compact Tunable Laser Sources

Data Sheets

Introduction

The Keysight Technologies, Inc. 819xxA Series of compact tunable lasers enables optical device characterization at high power levels and measurement of nonlinear effects. Each of the 819xxA lasers enhances the testing of systems, all types of optical amplifiers and other active components, as well as passive optical components.

As single-slot plug-in modules for the Keysight Technologies 8163A/B, 8164A/B, and 8166A/B mainframes, Keysight’s compact tunable laser sources are a flexible and cost effective stimulus for single channel and DWDM test applications.

New: Fast Swept Spectral Loss Measurement

The Keysight 81960A sets a new mark in tunable laser performance with faster sweep speeds and repetition rates combined with the dynamic accuracy specifications needed for DWDM component measurements.

Dynamically specified sweeps in both directions enhance the repetition rate even further for real-time use in adjustment and calibration procedures. Rocket-fast and accurate, the 81960A helps you hit your development and production targets.

High Power Compact Tunable Lasers for S-, C-, and L-Band

Keysight’s 8198xA, 81960A and 8194xA compact tunable laser sources provide high output power up to +13 dBm.

The 81980A and 81989A modules cover a 110 nm wavelength range in the S- and C-band, the 81940A and 81949A modules operate over 110 nm in the C- and L-band, and the 81960A scans even 125 nm in­cluding the C- and L-band.

The Keysight 81950A system-loading source is step-tunable for setting channel frequencies within the C- or L-band. 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 81950A is a universal source for realistic loading of the latest transmission systems.

Seamless wavelength coverage

The new options 3xx for the 81950A tun­able system-loading source remove the wavelength gap between the C-band and L-band channels.

Modular Design for Multichannel Platform

The 819xxA tunable lasers are a family of plug-in modules for the Keysight 8163A/B, 8164A/B, and 8166A/B mainframes. Their compact single-slot format makes them a flexible and cost-effective stimulus for single channel and multichannel dense wavelength division multiplexing (DWDM) applications.

Accurate DWDM Component Measurements at Full Scan Rate

The 81960A module adds the new and unique capability to sweep in both directions, and sports increased sweep speeds and acceleration. Its dramatically improved and fully specified dynamic accuracy enables DWDM component measurements and adjustments at high repetition rate, and boosts the characterization of single and multichannel com­ponents. The laser is especially well supported by the swept-wavelength measurement engines in the N7700A software suite and can be programmed directly.

The most specially adapted application for this laser is high repetition-rate scanning for real-time updates, enabled by the Keysight N7700A-102 fast-sweep insertion loss engine. It synchronizes the laser with the N7744A or N7745A power meters to produce power and loss spectra in a convenient GUI display, and accelerates the uploading of the logged wavelength monitor data.

The wavelength resolution and 50-60 dB dynamic range achieved surpass comparable measurements by an Optical Spectrum Analyzer (OSA), with repetition rates better than 2 Hz for add-drop filter adjustment and calibration.

The high performance in continuous sweeps also matches this laser well to the single-sweep PDL and IL N7700A-101 measurement engine. The enhanced dynamic wave­length accuracy will satisfy the test needs for many DWDM components at an optimized performance/price balance. The source to spontaneous noise ratio, SSE, while not as high as the 81600B series, is also sufficient to qualify the isolation of many filter devices. The higher sweep speeds save time measuring broadband devices not needing such high wavelength resolution.

These same advantages apply to use with the N7788B component analyzer for measur­ing PMD and DGD in addition to PDL and IL. The relative wavelength accuracy during the sweeps is especially important for accurate DGD measurements using the JME method, since the result depends on the derivatives with respect to wavelength. The high speed is great for measuring isolators, PMF and other broadband components.

The powerful lambda scan functions of the 816x Plug&Play driver for customized pro­grams, and the N7700A IL engine which provides a GUI interface to these functions also support power and IL measurements together with any of the Keysight power meters. And the performance of swept-wavelength measurements in the N4150A PFL, includ­ing fast repetitive sweeps are also supported with this newest member of the Keysight swept tunable lasers.

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