TG120 Electro-Optic Modulation Signal Generator
| Origin | Canada |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Imported |
| Model | TG120 |
| Price | Upon Request |
| Component Category | Light Source |
Overview
The TG120 Electro-Optic Modulation Signal Generator is a precision benchtop function generator engineered for demanding optical modulation applications in research-grade photonic laboratories. Unlike general-purpose arbitrary waveform generators, the TG120 is specifically optimized to drive electro-optic modulators (EOMs) — including LiNbO₃, KDP, and BBO-based devices — with stable, low-jitter, high-fidelity analog waveforms. Its core architecture integrates a high-stability quartz-controlled oscillator, temperature-compensated amplification stages, and impedance-matched 50 Ω output circuitry to ensure minimal signal reflection and phase distortion when interfacing with high-bandwidth optical modulators. Designed for use in coherent control experiments, optical heterodyne detection, laser cavity dumping, and quantum optics setups, the TG120 delivers repeatable amplitude, frequency, and phase characteristics essential for quantitative interferometric and spectroscopic measurements.
Key Features
- Frequency range: DC to 120 MHz (sine, square, triangle, ramp, and user-defined arbitrary waveforms)
- Amplitude output: 0–10 Vpp into 50 Ω, with fine-resolution digital attenuation (0.1 dB steps) and offset control (±5 V)
- Low phase noise (< −110 dBc/Hz at 10 kHz offset from 10 MHz carrier) suitable for phase-sensitive optical modulation
- Programmable rise/fall times down to 2.5 ns (typical), supporting high-speed EOM switching in ultrafast optics
- Front-panel BNC and rear-panel SMA outputs with selectable AC/DC coupling and 50 Ω termination
- USB 2.0 and GPIB (IEEE-488.2) interfaces for remote control and integration into automated test benches
- Compliance with IEC 61000-4 electromagnetic immunity standards; CE-marked for laboratory use
Sample Compatibility & Compliance
The TG120 is compatible with standard commercial electro-optic modulators requiring ±5 V or 0–10 V drive signals, including intensity modulators (IM), phase modulators (PM), and Mach–Zehnder interferometric modulators (MZM). It supports both continuous-wave and pulsed-laser synchronization via external trigger input (TTL-compatible, 5 V logic). The unit conforms to ISO/IEC 17025 calibration traceability requirements when used with accredited metrology labs. While not a medical or industrial safety-certified device, its design adheres to GLP-aligned documentation practices for instrument qualification (IQ/OQ protocols available upon request). No embedded firmware requires FDA 21 CFR Part 11 compliance, as it operates exclusively as an analog signal source without data storage or audit trail functionality.
Software & Data Management
The TG120 ships with cross-platform PC software (Windows/macOS/Linux) supporting SCPI command set (IEEE Std 488.2 compliant) for script-driven waveform sequencing. Users may define multi-segment waveforms, configure sweep parameters (linear/logarithmic frequency/amplitude sweeps), and export waveform data in CSV format for post-processing in MATLAB or Python. The software includes built-in FFT analysis tools to verify spectral purity of generated signals prior to optical modulation. Remote operation is fully supported via LabVIEW drivers (NI-VISA), Python PyVISA libraries, and MATLAB Instrument Control Toolbox. All configuration files are stored in human-readable JSON format, enabling version control and reproducibility across experimental sessions.
Applications
- Laser intensity and phase stabilization in cavity-enhanced absorption spectroscopy (CEAS) and optical frequency comb stabilization
- Dynamic bias control of Mach–Zehnder modulators in coherent optical communications testbeds
- Time-resolved pump-probe experiments requiring synchronized RF gating of optical pulses
- Calibration of photodetector frequency response using swept-sine modulation
- Quantum optics experiments involving polarization or path encoding via EOM-driven interferometers
- Teaching laboratories for undergraduate and graduate photonics courses on modulation theory and RF–optical interface design
FAQ
Is the TG120 calibrated before shipment?
Yes — each unit undergoes factory calibration against NIST-traceable standards for amplitude accuracy (±1.5% up to 50 MHz), frequency stability (±1 ppm over 0–40 °C), and output impedance match (VSWR < 1.2:1 up to 100 MHz). A calibration certificate is included.
Can the TG120 drive high-voltage EOMs requiring >10 Vpp?
No — the TG120 is designed for standard low-voltage EOMs. For high-voltage modulation (e.g., >30 Vpp), an external broadband RF amplifier with appropriate gain and impedance matching must be integrated into the signal chain.
Does the TG120 support burst mode or gated output?
Yes — programmable burst mode (with user-defined cycle count, gate delay, and repetition rate) is supported via SCPI commands or front-panel menu navigation.
What is the warranty and service coverage?
The TG120 carries a 24-month limited warranty covering parts and labor. Extended calibration services and technical support are available through authorized regional service centers in North America and Europe.
