Optical waveguides – With disengagable mechanical connector – Optical fiber to a nonfiber optical device connector
Patent
1997-10-07
1999-02-09
Sanghaui, Hemang
Optical waveguides
With disengagable mechanical connector
Optical fiber to a nonfiber optical device connector
385 19, 385 52, 385 90, G02B 636
Patent
active
058705171
ABSTRACT:
A laser diode alignment package has a substrate with capacitive alignment pads. A charge generator is configured to charge or discharge each of the capacitive alignment pad to a respective voltage in response to an instruction from a processor. A laser diode chip has a conductive die paddle rigidly attached thereto and the laser diode chip is movably positioned on the substrate. The conductive die paddle is positioned with respect to the alignment pads such that when the respective voltages are applied the capacitive alignment pads, Coulomb forces will move the conductive die paddle with respect to the substrate. A feedback mechanism measures the optical power passing through the optical fiber. A processor estimates based on this measured optical power level what voltage should be applied to each of the capacitive coupling pads in order to apply Coulomb forces necessary to align the laser diode chip to the optical fiber. The processor then sends charging instructions to the charge generator. The alignment process can be fully automated thus minimizing the risk of human error. The structure and method require few, if any, moving mechanical parts in order to align the laser and requires little or no heavy equipment.
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Integrated Device Technology Inc.
Sanghaui Hemang
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