Bias Controller Specialist
Make your experiments plug and play
Worldwide Distributors
Worldwide Distributors
Worldwide Distributors
We specialize in the development of advanced optical modulator bias controllers and fully customized optical modules. Our patented bias controllers are engineered for a wide range of modulators, including bulk LiNbO₃ and TFLN MZ, QPSK, and DP-QPSK devices. We offer both Electro-Optic (EO) and Thermo-Optic (TO) controllers, and provide tailored solutions to meet specific requirements for bias controllers and optical modulation modules. All our products are compact, user-friendly, and designed to operate seamlessly without the need for manual calibration.
Solutions
Stable within 30 seconds of powering on and maintain precise and stable locking for extended period.
Fast and Stable
Plug and play, no manual calibration is needed. Incredibly user-friendly.
True Automatic
size of 30mm*40mm, super compact and easy to integrated.
Coin Size
Our Products
MBC
MBC Series
TFLN Series
TFLN
TFLN-DPIQ-01
Thermo-optic (TO) Dual Polarization IQ Bias Controller
• Coherent Transmission
• Single Side Band(SSB) modulation (Dual polarization)
• QPSK, QAM, OFDM modulation
TFLN-IQ-01
Thermo-optic (TO) Single Polarization IQ Bias Controller
• Coherent Transmission
• Single Side Band(SSB) modulation (Single polarization)
• QPSK, QAM, OFDM modulation
TFLN-MZM-01
Thermo-optic (TO) MZ Modulator Arbitrary Point Bias Controller
• Digital NRZ, RZ, PAM mdoualtion
• Pulse applications
• Carrier Suppression
• Brillouin scattering system and other optical sensing
• CATV Transmitter
TFLN-NULL-01
Thermo-optic (TO) MZ Modulator Null Point Bias Controller
• Brillouin scattering system and other optical sensing
• Pulse applications
• Carrier Suppression
• Radio over Fiber systems
MZ
MZ Series
Received PS-64QAM constellation enabled by stable bias control with our TFLN IQ Series Controller.
*Test site: Photonics Research Institute, PolyU — Prof. ZHONG Kangping's Team
TFLN 64QAM Constellation
Received PS-32QAM constellation enabled by stable bias control with our TFLN IQ Series Controller.
*Test site: Photonics Research Institute, PolyU — Prof. ZHONG Kangping's Team
TFLN 32QAM Constellation
Reference for the QPSK modulation effect of the TFLN-IQ controller, modulator’s I-Arm & Q-Arm is locked at Null point and P-Arm is locked at Quad point.
TFLN QPSK Eye Diagram
Reference for the single sideband (SSB) modulation result of the TFLN-IQ controller, carrier is suppressed to the modulator’s best performance.
TFLN SSB Spectrum
Reference for the BPSK modulation effect of the TFLN-NULL controller, modulator is locked at Null point.
TFLN BPSK Eye Diagram
Reference for the dual sideband (DSB) modulation result of the TFLN-NULL controller, modulator is locked at Null point.
TFLN DSB Spectrum
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Reference for the NRZ modulation result of the TFLN-QUAD controller, modulator is locked at Quad point.
TFLN NRZ Eye Diagram
Under continuous tracking by the controller for tens of hours, the QPSK modulation system consistently maintains excellent performance.
QPSK Diagram
Achieving excellent pulse modulation performance with a high extinction ratio modulator.
Pulse Diagram
Under the precise control of the controller, the SSB modulation system achieves a measured carrier suppression ratio of 30+dB and a sideband suppression ratio of 40+dB.
SSB Diagram
Dual sideband modulation is easily achieved with outstanding carrier suppression performance. System's overall effect is close to the performance limit of EOM.
Carrier Suppression Diagram
Under precise working point locking, high-frequency NRZ or PRBS modulation can be achieved, and clear eye diagrams can be easily obtained.
NRZ Modulation
The control supports xQAM coherent modulation in multiple formats.
16QAM Constellation Diagram
Result of QPSK coherent modulation.
QPSK Constellation Diagram
TFLN 64QAM Constellation
Received PS-64QAM constellation enabled by stable bias control with our TFLN IQ Series Controller.
*Test site: Photonics Research Institute, PolyU — Prof. ZHONG Kangping's Team
TFLN 32QAM Constellation
Received PS-32QAM constellation enabled by stable bias control with our TFLN IQ Series Controller.
*Test site: Photonics Research Institute, PolyU — Prof. ZHONG Kangping's Team
TFLN QPSK Eye Diagram
Reference for the QPSK modulation effect of the TFLN-IQ controller, modulator’s I-Arm & Q-Arm is locked at Null point and P-Arm is locked at Quad point.
TFLN SSB Spectrum
Reference for the single sideband (SSB) modulation result of the TFLN-IQ controller, carrier is suppressed to the modulator’s best performance.
TFLN NRZ Eye Diagram
Reference for the NRZ modulation result of the TFLN-QUAD controller, modulator is locked at Quad point.
TFLN DSB Spectrum
Reference for the dual sideband (DSB) modulation result of the TFLN-NULL controller, modulator is locked at Null point.
TFLN BPSK Eye Diagram
Reference for the BPSK modulation effect of the TFLN-NULL controller, modulator is locked at Null point.
QPSK Diagram
Under continuous tracking by the controller for tens of hours, the QPSK modulation system consistently maintains excellent performance.
16QAM Constellation Diagram
The control supports xQAM coherent modulation in multiple formats.
Pulse Diagram
Achieving excellent pulse modulation performance with a high extinction ratio modulator.
SSB Diagram
Under the precise control of the controller, the SSB modulation system achieves a measured carrier suppression ratio of 30+dB and a sideband suppression ratio of 40+dB.
Carrier Suppression Diagram
Dual sideband modulation is easily achieved with outstanding carrier suppression performance. System's overall effect is close to the performance limit of EOM.
TFLN 64QAM Constellation
Received PS-64QAM constellation enabled by stable bias control with our TFLN IQ Series Controller.
*Test site: Photonics Research Institute, PolyU — Prof. ZHONG Kangping's Team
TFLN 32QAM Constellation
Received PS-32QAM constellation enabled by stable bias control with our TFLN IQ Series Controller.
*Test site: Photonics Research Institute, PolyU — Prof. ZHONG Kangping's Team
TFLN QPSK Eye Diagram
Reference for the QPSK modulation effect of the TFLN-IQ controller, modulator’s I-Arm & Q-Arm is locked at Null point and P-Arm is locked at Quad point.
TFLN SSB Spectrum
Reference for the single sideband (SSB) modulation result of the TFLN-IQ controller, carrier is suppressed to the modulator’s best performance.
TFLN NRZ Eye Diagram
Reference for the NRZ modulation result of the TFLN-QUAD controller, modulator is locked at Quad point.
TFLN DSB Spectrum
Reference for the dual sideband (DSB) modulation result of the TFLN-NULL controller, modulator is locked at Null point.
TFLN BPSK Eye Diagram
Reference for the BPSK modulation effect of the TFLN-NULL controller, modulator is locked at Null point.
QPSK Diagram
Under continuous tracking by the controller for tens of hours, the QPSK modulation system consistently maintains excellent performance.
16QAM Constellation Diagram
The control supports xQAM coherent modulation in multiple formats.
Pulse Diagram
Achieving excellent pulse modulation performance with a high extinction ratio modulator.
SSB Diagram
Under the precise control of the controller, the SSB modulation system achieves a measured carrier suppression ratio of 30+dB and a sideband suppression ratio of 40+dB.
Carrier Suppression Diagram
Dual sideband modulation is easily achieved with outstanding carrier suppression performance. System's overall effect is close to the performance limit of EOM.
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About
Plugtech was established at Hong Kong Polytechnic University in 2014. Since our inception, we have been dedicated to the development of Bias Controllers. We have successfully delivered over 7,000 controllers to laboratories and universities worldwide, including prestigious institutions such as NASA and Nokia Bell Labs.
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