Single Polarization IQ/QAM Transmitter, QPSK/xQAM Multi-format


The IQ/QAM Transmitter is a high performance modulation evaluation unit that allows user to produce optical signals with complex modulation schemes (QPSK, QAM, OFDM). It integrates high bandwidth dual parallel Mach-Zehnder modulator and high speed RF drivers capable of dealing with data rate up to 56 Gbps. It features an embedded bias controller that allows to automatically set the modulator operating point.

Bench-Top - mini


C or L band, Single Polarization
QPSK, Data rate up to 64G bps
16-QAM, Symbol Rate up to 28G Baud
Automatic bias point setup and tracking


Long Haul Optical Transmission
Microwave Photonics
Carrier-Suppressed Single Sideband
Testing and Measurement


Parameter Unit Min. Typ. Max.
Operating Wavelength nm 1525 1550 1610
Optical Bandwidth GHz 22 25 28
On/Off Extinction Ratio @ DC dB 20 26 32
Insertion Loss dB 4.5 6.0 7.5
Maximum Data Rate Gbps 40 50 56
Chirp, Alpha Parameter dB -0.1 0 +0.1
Input Optical Power @ CW dBm -15 10 15
RF-MZI Electrode Internal Push-Pull
RF Input Amplitude @50Ω mVpp 100 300 500
RF Channel Gain Imbalance dB 0.1 0.5 1.0
RF Gain dB Typ.10 ( No Adjustment )
Eye Diagram Adjustment Jitter and Cross-over
Bias Control Mode Automatic
Modulation Format
( 16QAM upon Request )
Optical Input Option Tunable Laser
RF Input Port 2.92mm K-Female 50 Ohms 2 Ports
Optical Fiber and Connector PM1550, FC/APC
Back Panel Interface Manual Trimming
Operating Temperature 0 ~50
Power supply* AC 90~220V
Dimensions  (L×W×H)* mm 240x350x65

Note: *The specifications subject to change without notice.

*The appearance and the key component varies  according to different performance requirements.



1 2 3 4 5 6 7
Format Package Wavelength Optional 1 Optional 2 Optional 3 Connector
4=4QAM T=Benchtop C=C band BC=Bias DR=RF Driver TL=Tunable Laser FA=FC/APC
16=16QAM M=Module L=L band N=No BC N=No DR N=No TL NA=None

EYE DIAGRAM Symbol Rate at 10GBaud & Symbol Rate at 25GBaud