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100 Gbit/s Band DP-QPSK and 40 Gbit/s Band DQPSK Evaluation




  • Pre-coding Signal Generation
CH synchronized DP-QPSK, DQPSK signal
  • Optical Output Waveform Optimization
Cross-point adjustment
  • Timing Control between Channels
Precision data delay
  • Modulator Input Level Tolerance
3.5Vp-p Data out, Variable Amplitude


2ch/4ch Synchronization Pre-code Signal Generation

The Pre-code function automatically generates 100G DP-QPSK and 40G DQPSK modulation signals for evaluating optical modulators. Hardware-based generation of modulation signals produces pure PRBS31 signals without pattern length restrictions, resulting in high-reliability evaluations using high-load pseudo-random patterns closely approximating real signals.



Skew Effect Check

Processing high-speed digital signals requires both logic tests and actual equipment tests. The MP1800A supports both pattern synchronization and phase adjustment functions, permitting easy tests of Rx device skew tolerance and crosstalk effects. 



Optimum High-quality Waveform for MZ-Modulator Evaluation

MZ-Modulator can be direct-driven by the Variable Data Output function at up to 3.5 Vp-p. The amplitude and cross-point are easily adjusted on-screen, shortening evaluation times and offering high-reliability evaluation.



Low-jitter, High-quality Waveform

The PPG module supports low-jitter and high-quality waveforms.

The output amplitude can be customized to application needs.

Low-jitter: 700 fs rms (typ.)

High amplitude: 0.5 Vp-p to 3.5 Vp-p

                    [MU183020A-013/023, MU183021A-013]





Versatile Pattern Generation


•Pseudorandom Patterns (PRBS)

All PRBS patterns required by standards are supported up to PRBS 231 – 1.

2n – 1 (n = 7, 9, 10, 11, 15, 20, 23, 31)

•Zero Substitution Pattern

Consecutive 0 s and 1 s patterns can be added to PRBS patterns for CDR tolerance tests.

2n, 2n – 1 (n = 7, 9, 10, 11, 15, 20, 23)

•Data Pattern

Patterns required by each application, such as CJTPAT, CJPAT and K28.5 can be created flexibly.

256 Mbits/ch max. (Steps: 1 bit)


 Mixed Pattern

A mixed data and PRBS pattern can be output. At creation of SONET/SDH frames, adding a PRBS231 – 1, etc., pattern to the payload supports setting of a continuous pattern across frames.


The DQPSK and DP-QPSK pre-code signal generation are supported. Hardware-based generation of modulation signals produces pure PRBS31 signals without pattern length restrictions.

•Burst Signals

Application evaluation using burst signals, such as optical loop test and transmission test using quantum noise technology are supported.



Learn more

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Technical Note

Trends and Issues in Ultra-High Speed Transmission Technologies


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