Related Products
Product Name：Amplitude Modulators
Product Type：Amplitude Modulators
Product Model：Amplitude Modulators
Brands：
Applications：
  • Innovative design minimizes thermal birefringence
  • High-quality lithium niobate crystals provide high contrast and low drive voltages
  • Can be used as electronically variable wave plates

 

New Focus™ amplitude modulators are speci?cally designed for high performance at modulation frequencies of up to 200 MHz. The Model 4102/4 broadband amplitude modulator can be operated from DC to 200 MHz. The Model 4101/3 is a resonant device that can be built to operate at any frequency from 0.01 to 200 MHz.

The crystals in these modulators are mounted at 45° so that your input polarization can be either vertical or horizontal. To minimize thermal birefringence, we use two matched crystals arranged in series. This results in amplitude modulators that exhibit less than 1 mrad/°C of temperature-dependent polarization rotation.

Since our modulators don’t include external polarizers, they can be used as electronically variable wave plates. To use the device as an amplitude modulator, a polarizer is needed at the output. (See Modulator Accessoriesfor our polarizers.)

The Model 4101/3 can be driven with a low-voltage function generator or the Model 3363 resonant-modulator drivers (?Resonant-Modulator Drivers). The Model 4102/4 can be driven using our Model 3211 broadband-modulator drivers (?Broadband-Modulator Drivers) with a function generator. Call us or visit the support section of our website for driver recommendations.
 

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