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Description: The NanoTrak active-feedback optical alignment system is ideal for use with fiber-optic and integrated optical systems. NanoTrak automatically aligns fibers to devices in less than one second, dramaitcally simplifies waveguide characterization and pigtailing procedures and ensures drift-free positioning and accurate data acquisitions.
The NanoTrak is an optical control system. It modulates the coupled optical power between two components by applying a small oscilatory motion to one of the components in the y-z plane. The motion is achieved by imposing a small modulation voltage to the y and z piezoelectric actuators of the positioning device holding the component.
The radiation transmitted to the next optical component and on through the optical system is constantly monitored for power, modulation intensity, and phase; normally, a simple detectoris adequate. Using phase-sensitive detection techniques, the NanoTrak control unit provides output DC correction voltages that are amplified in the piezoelectric controller and applied to the device piezoelectric actuators to drive the component into alignment.
This unit has the following specifications:
Scans and searches to find transmitted optical signal
Rapidly acquires a throughput optical signal
Maximizes the optical signal through constant adjustment of the appropriate position of the piezoactuators
Compensates for misalignments in y and z caused by interaction with adjustments in axial displacement, pitch, yaw, and roll as they are adjusted for optimal alignment and throughput power
Correct for positional changes caused by environmental disturbances such as temperature change and vibration
Counters bonding forces during pigtailing operation, eliminating erratic UV curing and other undersirable effects
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