Patent ID: 7729404

Claim:
A method for aligning an optical package comprising a laser, a wavelength conversion device, at least one adjustable optical component, and at least one actuator, wherein the actuator comprises a first and second magnetic elements, and the method comprises: moving the adjustable optical component to a command position by applying a pulse-width modulated signal to the actuator, wherein the command position represents an optimized alignment of the laser and the wavelength conversion device, the first magnetic element is mechanically coupled to a base of the optical package and the second magnetic element is mechanically coupled to the adjustable optical component, the first and second magnetic elements are in magnetic communication with each other, at least one of the magnetic elements comprises an electrically conductive coil wherein the pulse-width modulated signal is applied to the electrically conductive coil to create a magnetic field of sufficient strength to move the adjustable optical component in at least one axis of motion; and measuring an actual position of the adjustable optical component by measuring an output of a position measuring circuit, wherein the output of the position measuring circuit represents a voltage amplitude of an oscillation in a resonator tank circuit during an “off” period of the pulse-width modulated signal, the resonator tank circuit comprises the electrically conductive coil electrically coupled to a capacitive element, and the voltage amplitude of the oscillation represents the actual position of the adjustable optical component; and adjusting the pulse-width modulated signal to compensate for a difference between the represented actual position and the command position.