The LDC-3908 8-Channel Laser Diode Controller has all of the same great features as our popular LDC-3916 16-Channel Laser Diode Controller. In fact, modules are interchangeable between the two instruments. The smaller size and lighter weight of the LDC-3908 make it an ideal instrument for smaller channel count applications such as R&D or production test of EDFAs and Raman ampliﬁers. Handles on the front panel and ﬂip-up feet on the bottom facilitate bench-top use, while ﬂanges facilitate installation into standard 19 inch instrument racks. Smart modules include controller modules with up to 1.5 A of laser current source and 9 W of TEC control, dual current source modules with two isolated currents of up to 1 A, a dual 9W TEC module, a 3A laser current module, and a 3 A 24 W TEC module.
The front-panel interface features a bright vacuum flourescent display making the information readable from almost any angle. You can easily monitor the operations of up to four channels at a time. Simple and intuitive menus, supported by screen-speciﬁ c soft-keys, allow you to quickly conﬁ gure and operate each channel. Menu depths have been intentionally limited to keep the front-panel operation concise, while more sophisticated operations are reserved for the GPIB interface. Setpoints and other values can be entered through your choice of numeric keypad entry, up-down arrow keys, or a rotary adjustment knob.
A powerful processor platform drives the LDC-3908 8 Channel Laser Diode Controller. When coupled with GPIB technology from National Instruments HS488 TNT chipset, you get all the processing capability needed for mission-critical production testing. With microprocessors on each module, the mainframe engine manages 8 independent control channels quickly and reliably. Free LabVIEW® instrument drivers are available upon request.
Designed to provide the cleanest, safest power available for laser diode control, each modules control functions are handled locally and communicated quickly to the host processor. On-board intelligence simpliﬁes future addition of modules since all operational and calibration data is stored in the module. Simply plug in your new module and power up the system. Your mainframe never needs to leave the rack. This simplicity, coupled with low noise, high stability outputs, and state-of-the-art laser diode protection equals ultimate performance.
This new current source topology uses an innovative, proprietary control loop and incorporates the latest techniques for signal ﬁltering and circuit board shielding. These advancements provide unbeatable stability and unparalleled noise performance, ideal for the most demanding production test applications. This design also incorporates adjustable compliance voltage and faster shutoff, helping prevent dangerous reconnect transients that can occur from intermittent connections between the controller and your laser diode. This new level of protection adds to our proven list of protection features: independent current limits, output shorting circuits, and a slow start turn-on feature.
Operational modes including constant current, constant current high-bandwidth, or constant optical power are selectable from the front panel or via the GPIB interface. Measurement of your laser diodes forward voltage is possible with 4-wire accuracy, which can be helpful in production environments where longer cable runs are common. A single, rear-panel modulation port can individually enable direct modulation of each channels laser current. This new current source design supports modulation bandwidths of up to 1.2MHz (small signal), achieving the highest direct modulation levels available today. Modules also include reverse photodiode bias capabilities, especially important for telecom wavelength devices.
Equipped with a smart integrator control loop and an expanded gain setting range, the temperature control circuits optimize settling times. These modules also provide voltage measurement of your TEC and allow internal selection of thermistor current ranges via front-panel or GPIB. Achieve unparalleled temperature stabilities with ultra-stable design topology and low noise bipolar output stages.
By combining true modularity with high channel density, the LDC-3908 easily grows with your applications. When coupled with our 16-channel mounting tray, this controller also serves as a cost effective DWDM optical source set. Simply mount your choice of WDM DFB laser diodes in the mounting tray, connect to the controller, and youll have full control over 8 WDM signal sources at a time. If your speciﬁed test wavelengths change, simply drop in new DFB laser diodes. For even higher channel counts, add another controller and mounting tray to your rack. If your device drive speciﬁcations change, look to ILX Lightwave for new modules that can be easily added to your system in the future.
The LDC-3908 8 Channel Controller provides all of ILX Lightwaves proven laser protection features like independent current limits, slow-start turn-on circuits, and isolated power supplies.* The adjustable compliance voltage capability brings even greater levels of protection to your devices. Designed for time critical production test needs, the LDC-3908 will satisfy your test requirements with fast, reliable, and secure laser diode control.
For full product specifications, see the LDC-3908 Brochure .
For additional questions contact ILX Lightwave directly at 800-459-9459 or email@example.com.