Coherent Lightwave Signal Analyzer OM4000 Series
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Coherent Lightwave Signal Analyzer OM4000 Series Data Sheet OM4000 Series Coherent Lightwave Signal Analyzer and Tektronix*1 DPO70000 Series Features & Benefits Unparalleled Flexibility ■ Coherent Lightwave Signal Analyzer Architecture Compatible with both ■ Complete Coherent Signal Analysis System for Polarization-multiplexed QPSK, Offset QPSK, QAM, Differential BPSK/QPSK, and Other Advanced Modulation Formats ■ Displays Constellation Diagrams, Phase Eye Diagrams, Q-factor, Q-plot, Spectral Plots, Poincaré Sphere, Signal vs. Time, Laser Phase Characteristics, BER, with Additional Plots and Analyses Available through the MATLAB Interface ■ Measures Polarization Mode Dispersion (PMD) of Arbitrary Order with Most Polarization Multiplexed Signals Precise Optical Receiver ■ Precise Coherent Receiver Hardware provides Minimal Variation over Temperature and Time for a High Degree of Accuracy and High-stability, Polarization-diverse, Optical Field Detection ■ Highly Linear Photo Detection allows Operation at High Local Oscillator and Signal Power Levels to Eliminate Electrical Amplification ■ An Integrated Pair of ECDL Tunable Lasers for Use as a Local Oscillator and Another for Self-test. Both Lasers have Industry-best Linewidth and Tuning Range for Any Wavelength within the Band ■ Coherent Lightwave Signal Analyzer Software Tolerates >5 MHz Instantaneous Signal Laser Linewidth - Compatible with Standard Network Tunable Sources such as DBR and DFB Lasers ■ No Laser Phase or Frequency Locking Required ■ Smart Polarization Separation Follows Signal Polarization User-defined Extensibility ■ User Access to Internal Functions with a Direct MATLAB*3 Interface ■ The OM4000 can be Controlled through Ethernet for Remote Access ■ Superior User Interface offers Comprehensive Visualization for Ease-of-Use Combined with the Power of MATLAB ■ Coherent Lightwave Signal Analyzer Software included with OM1106 *1 The OM4106D requires a Tektronix oscilloscope. Other OM4000 models are compatible with many oscilloscopes. Contact sales for details. *2 Certain features may be available only when used with Tektronix oscilloscopes. *3 MATLAB is a registered trademark of MathWorks.

Data Sheet Figure 1 - OM4000 User Interface (OUI) showing color-grade graphics options. Symbols can also be colored to a key indicating prior state. Data shown is 112 Gb/s PM-QPSK. The OM4000 Coherent Lightwave Signal Analyzer (CLSA) is a 1550 nm (C- and L-band) fiber-optic test system for visualization and measurement of complex modulated signals, offering a complete solution to testing both coherent and direct-detected transmission systems. The CLSA consists of a polarization- and phase-diverse receiver and analysis software enabling simultaneous measurement of modulation formats...

Coherent Lightwave Signal Analyzer — OM4000 Series scope sample rate ApplyPliasc ccnIcl- l^iiRuiL'Clotk I vhidlcSi H' 1.SLir.i:ilL-JAbjn tnhs i^liimucHiaM1 conni bil error* scope sample rate Figure 4- Data flow through the "Core Processing" engine. Figure 5 - QAM Measurements on the OM4000 User Interface (OUI). Signal Processing Approach For real-time sampled systems, the first step after data acquisition is to recover the clock and re-time the data at 1 sample per symbol at the symbol center for the polarization separation and following algorithms (shown as upper path in Figure 4). The...

Data Sheet Don't worry about what algorithm to use. When you select a signal type in our OUI, for example, PM-QPSK, the optimal algorithm is applied to the data for that signal type. Each signal type has a specially designed signal processing approach that is best for the application. This means that you can get results right away. Don't Get Stymied by Laser Phase Noise Signal processing algorithms designed for electrical wireless signals don't always work well with the much noisier sources used for complex optical modulation signals. Our robust signal processing methods tolerate enough...

Coherent Lightwave Signal Analyzer — OM4000 Series Color Grade Constellation Color Grade with fine traces. Color Key Constellation - If the prior symbol was In Quadrant 1 (upper right) then the current symbol Is colored Yellow. If the prior symbol was In Quadrant 2 (upper left) then the current symbol Is colored Magenta. If the prior symbol was In Quadrant 3 (lower left) then the current symbol Is colored Light Blue (Cyan). If the prior symbol was In Quadrant 4 (lower right) then the current symbol Is colored Solid Blue. Color Features The Color Grade feature provides an infinite...

Data Sheet Eye diagram plots can be selected for appropriate modulation formats. Supported eye formats include Field Eye, which is simply the real part of the phase trace in the complex plane, Power Eye which simulates the eye displayed with a Tektronix oscilloscope optical input, and Diff-Eye, which simulates the eye generated by using a 1-bit delay-line interferometer. As with the Constellation Plot you can right-click to choose color options as well. The Field Eye diagram provides the following measurements: Measurement Description Log10 of the linear decision threshold Eye Height The...

Coherent Lightwave Signal Analyzer — OM4000 Series Matlab Engine Command [ PattXRe. Sync Frame End = 100; PattXIm. Sync Frame End = 100; PattYRe. Sync Frame End = 100; PattYlm. Sync Frame End = 100; Cone Processing; MATLAB window. GHz/Div lime Window = 3.9234E-O03 s Signal Spectrum window. Analysis Controls The Analysis Controls window allows you to set parameters relevant to the SignalSpectrumX LaserPhaseSpectrurnX ueva QP|| Laser Phase Spectrum window. Analysis Parameters Parameter Description Frequency Clock recovery is performed in software, so only a frequency _range of expected clock...

Data Sheet Poincaré Sphere window. Poincaré Sphere Polarization data signals typically start out well aligned to the PM-fiberaxes. However, once in standard single mode fiber, the polarization states will start to drift. However, it is still possible to measure the polarization states and determine the polarization extinction ratio. The software locks onto each polarization signal. The polarization states of the two signals are displayed on a circular plot representing one face of the Poincaré sphere. States on the back side are indicated by coloring the marker blue. The degree of...