Pulse transformer laser diode package
AssigneeMcDonnell Douglas Corporation
InventorGerald M. Bender
Life of this patent
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Abstract
A package for matching the characteristic impedance of a transmission line to the impedance of a pulsed semiconductor laser diode so that short duration pulses of light can be produced with a fast repetition rate. The package mounts the laser diode on the center post of a one turn secondary of a toroidal transformer whose multiturn primary is connected to the transmission line. Not only does this allow the matching of the characteristic impedances, but the center post provides heat sinking for the diode.
Claims11
A device for matching the impedance of a transmission line to the impedance of an electronic device, said matching device including:
- a body of electrically conductive material having a first surface in which is defined a generally toroidal shaped cutout with a center post extending out of said first surface;
- a toroidal transformer positioned about said center post and in said defined generally toroidal shaped cutout having a primary winding thereabout and means for connecting said primary winding to the transmission line;
- and
- a cover positioned in electrical communication with said first surface and the electronic device to enclose said toroidal transformer with a single electrical loop including the electronic device, whereby said body and said cover form a secondary winding about said toroidal transformer connected to the electronic device.
Dependencies are inferred from the claim text.