US PATENT SUBCLASS 359 / 282
.~.~.~.~.~ Using layered structure or plural mediums

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

237  DF  OPTICAL MODULATOR {3}
238  DF  .~ Light wave temporal modulation (e.g., frequency, amplitude, etc.) {3}
240  DF  .~.~ Changing bulk optical parameter {5}
280  DF  .~.~.~ Magneto-optic {2}
281  DF  .~.~.~.~ Modulation of polarized light via modulating input signal {2}
282.~.~.~.~.~ Using layered structure or plural mediums

DEFINITION

Classification: 359/282

Using layered structure or plural mediums:

(under subclass 281) Subject matter wherein the structure through which the beam passes or is acted upon consists of more than one contiguous film or layer which forms a composite structure which modulates the beam or wherein there are plural mediums or structures in the beam path, each of which modulates the beam.

(1) Note. The composite structure can be dielectric or reflective films or layers for the purposes such as compensation, increased Kerr rotation or index (e.g., impedance) matching.

SEE OR SEARCH THIS CLASS, SUBCLASS:

250, for plural mediums where at least one medium is electric field responsive.

254, 488 and 500, for layered structures where the purpose of the layers is for such things as protection or index matching..

487, for layered structure or plural mediums formed for polarization or beam-splitting purposes.

490+, for layered structures formed with at least one layer of dichroic material where additional layers may be provided for purposes such as protection or particular bonding and for layered structures formed for interference effects. 497+, for plural mediums including a birefringent medium which is not field responsive.