MBC-QPSK DQPSK/QPSK-Modulator Bias Controller Box

AMS item number: SW11911

Modulator Bias Controller; QPSK, DQPSK Single or Dual Polarization; 1300, 1550 nm; Detector... more

Product information "MBC-QPSK DQPSK/QPSK-Modulator Bias Controller Box"

Modulator Bias Controller; QPSK, DQPSK Single or Dual Polarization; 1300, 1550 nm; Detector Input Power -25—10 dBm; Typ. Null Mode Extinction Ratio 25 dB; Locking Slope Positive, Negative

OZ Optics’ MBC-QPSK is a bench-top device specially designed to control the bias positions for DP/SP QPSK-modulator used for 80 Gbit QPSK or QAM applications. DQPSK (Differential quadrature phase-shift key) modulator can improve optical transmission properties such as total reach, dispersion tolerance, or spectral efficiency. Since the DP/SP QPSK modulator is a combination of 2/1 phase modulators and 4/2 Mach-Zehnder modulators, there are six or three bias points requiring control.

OZ’s MBC-QPSK DQPSK/QPSK modulator bias controller box is a full-function desktop version of the modulator bias controller (MBC) family. It simultaneously sets the first and second modulators of each QPSK modulator at Null points and the third modulator of each QPSK modulator at quad point. The slope of working point of the first and second modulator is selectable from the computer via GUI.

Key Features:

Six modulators can be controlled with one controller (1st, 2nd modulator of each QPSK modulator at Null/peak mode, the 3rd at Quad)
User selectable locking slope (NULL n PEAK) through USB interface
One photodiode is integrated in the controller
Three operation modes: DQPSK, QAM or Arbitrary-waveform
All settings are remotely controllable via USB computer interface
User can select automation mode or manual mode
User may stop the pilot tone for any or all modulators and manually tune the bias through USB computer interface
Read back the input power to the PDs and the bias voltages through GUI
Detector Input Power: -25 dBm to -10 dBm
Optical Wavelength: 1300 nm, 1550 nm
Bias Voltage (Differential): -25 V to +25 V
Bias Voltage (Single End): -12.5 V to +12.5 V
Null Mode Extinction Ratio: 25 dB Typ., 40 dB Max.
Locking Slope: Positive or Negative
Locking Mode: Null (Peak) Positions for Child Modulators, Quad+ or (Quad-) Position for Parent Modulator
Pilot Tone Modulation Depth: 0.1% (Quad, Typ., and Null, Max.)
Pilot Tone Frequency: 4000 Hz
Power Supply: 90 VAC to 240VAC, 0.65 A
Compact Design, Dimensions: 15.5 cm x 20.3 cm x 6.9 cm
Weight: 0.95 kg

Applications: Controlling the Bias Positions for DP/SP QPSK-Modulator Used for 80 Gbit QPSK or QAM Applications