Keysight Technologies 81960A Getting Started Manual

Contents

Keysight 81960A Compact TLS Module Getting Started Guide 15Getting Started 1Typical Use ModelsThe Keysight 81960A Tunable Laser Source Family provides high outputpower up to +14 dBm.This module covers a total wavelength range of 125 nm in the C- andL-band.This laser has been designed for making spectral measurements of passivefiber optic components, where results with high wavelength accuracy anddynamic range are needed. The laser is especially well supported by theswept-wavelength measurement engines in the N7700A software suiteand can be programmed directly.The key application for this laser is high repetition-rate scanning for realtime updates, benefiting from the higher sweep speeds and acceleration,bidirectional sweeping and improved uploading of the logged wavelengthmonitor data. These features are best harnessed with the N7700A-102 fastspectral loss engine, which synchronizes the laser with the N7744A orN7745A power meters to produce power and loss spectra in a convenientGUI display. The wavelength resolution and 50-60 dB dynamic rangeachieved surpass comparable measurements with an OSA, with repetitionrates better than 2 Hz for add-drop filter adjustment and calibration.The high performance in continuous sweeps also matches this laser well tothe single-sweep PDL and IL N7700A measurement engine. The dynamicwavelength accuracy will satisfy the test needs for many DWDMcomponents at an optimized performance/price balance. The source tospontaneous noise ratio, SSE, while not as high as the 81600B series, isalso sufficient to qualify the isolation of many filter devices. The highersweep speeds save time measuring broadband devices not needing suchhigh wavelength resolution.These same advantages apply to use with the N7788B componentanalyzer for measuring PMD and DGD in addition to PDL and IL. Therelative wavelength accuracy during the sweeps is especially important foraccurate DGD measurements using the JME method, since the resultdepends on the derivatives with respect to wavelength. The high speed isgreat for measuring isolators, PMF and other broadband components.The powerful lambdascan functions of the 816x Plug&Play driver forcustomized programs, and the N7700A IL engine which provides a GUIinterface to these functions also support power and IL measurementstogether with any of the Keysight power meters. And the performance ofswept-wavelength measurements in the N4150A PFL, including fastrepetitive sweeps, are also supported with this newest member of theKeysight swept tunable lasers.

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