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Patent for Sale:

Optical Circulator    

A compact optical circulator with 3 ports situated between a dual-core and a single-core collimator.

Overview

The optical circulator technology benefits from: the reduction of polarization dependent loss, the first and second polarization rotators are non-reciprocal rotators, eliminates polarization mode dispersion using a reflective compensator, additionally the design lowers the cost of production.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 359: Optical: Systems And Elements

Optical elements included in this class are: Lenses; Polarizers; Diffraction gratings; Prisms; Reflectors; Filters; Projection screens; Optical Modulators; Optical Demodulators. Among the optical systems included in this class are: Compound lens systems; Light reflecting signalling systems (e.g., retroreflectors); stereoscopic systems; Binocular devices; Systems of lenticular elements; Systems involving light interference; Glare reducing systems; Light dividing and combining systems; Light control systems (e.g., light valves); building illumination with natural light; Systems for protecting or shielding elements; Optical systems whose operation depends upon polarizing, diffracting, dispersing, reflecting, or refracting light; kaleidoscopes. Further included are certain apertures, closures, and viewing devices of a specialized nature which involve no intentional reflection, refraction, or filtering of light rays. This class also includes optical elements combined with another type of structure(s) to constitute an optical element combined with a nonoptical structure or a perfection or improvement in the optical element.

Subclass 256: With birefringent element
Subclass 281: Modulation of polarized light via modulating input signal
Subclass 301: Acting on polarized light
Subclass 484: Time invariant electric, magnetic, or electromagnetic field responsive (e.g., electro-optical, magneto-optical)

Class 385: Optical Waveguides

(1) An optical waveguiding element, which conveys light from one point to another through an optically transparent elongated structure by modal transmission, total internal reflection, or total reflectorization. (2) A combination of an optical waveguiding element with an additional broadly recited optical element which couples light or a combination. (3) A combination of an optical waveguiding element with structure which mechanically joins this waveguiding element with another or with a diverse optical element. (4) An optical modulator where the modulation of a light wave characteristic is performed exclusively within an optical waveguiding element. (5) Other miscellaneous devices formed of an optical waveguide (e.g., a waveguide sensing device) and supplemental devices which are limited to use with an optical waveguide (e.g., an external clamp or retainer).

Subclass 16: Switch (i.e., switching from one terminal to another, not modulation)
Subclass 17: Matrix switch (i.e., M X N, where M and N are 3 or more)