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Keithley instrumentation makes it easy to build a LIV (light-current-voltage) system to test laser diode modules cost-effectively.
- Fiber Alignment Photodiode Meter 2502: High speed analog output enables LIV testing at the fiber alignment stage.
- Pulse Laser Diode Test System with optional Integrating Sphere 2520/KIT1: Synchronizing test system providing sourcing and measurement capability for pulsed and continuous LIV test.
- TEC SourceMeter SMUs, 2510 and 2510-AT: Ensure tight temperature control for laser diode modules by controlling its thermo-electric cooler.
Features | Benefits |
| Active temperature control | Prevents temperature variations that could cause the laser diode dominant output wavelength to change, leading to signal overlap and crosstalk problems. |
| 50W TEC Controller | Allows for higher testing speeds and a wider temperature setpoint range than other, lower-power solutions. |
| Fully digital P-I-D control | Provides greater temperature stability and can be easily upgraded with a simple firmware change. |
| Autotuning capability for the thermal control loop (2510-AT) | Eliminates the need to use trial-and-error experimentation to determine the best combination of P, I, and D coefficients. |
| Wide temperature setpoint range (50 to +225) and high setpoint resolution (.001) and stability (.005) | Covers most of the test requirements for production testing of cooled optical components and sub-assemblies. |
| Compatible with a variety of temperature sensor inputsthermistors, RTDs, and IC sensors | Works with the types of temperature sensors most commonly used in a wide range of laser diode modules. |
| AC Ohms measurement function | Verifies the integrity of the TEC device. |
| 4-wire open/short lead detection for thermal feedback element | Eliminates lead resistance errors on the measured value, reducing the possibility of false failures or device damage. |