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Optical Modulation Analyzer

Photonics Spectra
May 2012

SANTA CLARA, Calif., Feb. 29, 2012 — For testing 40/100-G coherent transmitters and receivers during development and manufacturing, Agilent Technologies Inc. has introduced a portable, fully integrated optical modulation analyzer with a laptop-size screen.

The N4392A enables engineers to characterize components like in-phase quadrature modulators and integrated coherent receivers designed according to industry standards for 100-G coherent transmission. The integrated design accelerates setup and eliminates configuration effort so users can focus on design challenges.

Built-in performance verification and recalibration routines deliver high-confidence test results and extend the recommended recalibration period, improving uptime.

Advanced integrated circuit technology was used to create the optical modulation analyzer in the form factor of a mid-size oscilloscope. A 15-in. analysis screen shows more information at the same time, making it easier for engineers to characterize complex modulated optical signals.

The device offers four differential radio-frequency input channels to help engineers characterize integrated coherent optical receivers.

For 400-Gb/s to 1-Tb/s next-generation transmission rates, the company offers the N4391A optical modulation analyzer enabled by the proprietary 90000 X-Series oscilloscopes.

The new optical modulation analyzer family offers novel signal-processing algorithms for modulation-format-transparent polarization alignment and phase tracking. The family also offers chromatic dispersion and first-order polarization mode-dispersion measurement and compensation. All modulation analyzers provide a defined interface to customer-developed MatLab algorithms. This feature enables consistent results from early research to final manufacturing qualification, including the exchange of configuration files.

Features of the Agilent N4392A optical modulation analyzer include full support of 32-Gbaud modulation formats, 63-Gs/s real-time sampling, and optical and differential radio-frequency inputs combined in one instrument.

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