This video demonstrates the application of Plugtech’s IQ series controllers in a QPSK signal modulation system. The IQ series controllers use a fully digital tracking algorithm to simultaneously monitor the I, Q, and P arms of the IQ modulator, supporting both QPSK and QAM modulation. Testing shows that with the IQ series controller, the QPSK/QAM system maintains excellent performance in terms of bit error rate, constellation diagram, and eye diagram, even after extended operation.

This video demonstrates the carrier suppression performance of Plugtech’s MZ series bias voltage controllers in lithium niobate MZ modulators. With the Plugtech controller, the system can achieve carrier suppression in around 10 seconds, reaching an extinction ratio close to the modulator’s performance limit, making it an ideal choice for fiber optic sensing systems.

This video showcases the performance of Plugtech’s bias voltage controller in lithium niobate modulators. Through a live demonstration, we’ll show how this controller quickly enables carrier-suppressed single-sideband (SSB) modulation and highlights its significant advantages in enhancing system performance. With Plugtech’s MBC-IQ and MBC-DPIQ series controllers, users can achieve stable modulator operation at the optimal working point without manual calibration, and the system remains unaffected by external environmental factors.