OPTICAL ISOLATOR

An optical isolator comprises a first polarizer (3) for separating an incident light beam into two light beams which are orthogonal one to another in a direction of polarization and which are non-parallel one with another in a direction of propagation, a 45 degree Faraday rotator (4), a second polar...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	TADATOSHI HOSOKAWA
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	An optical isolator comprises a first polarizer (3) for separating an incident light beam into two light beams which are orthogonal one to another in a direction of polarization and which are non-parallel one with another in a direction of propagation, a 45 degree Faraday rotator (4), a second polarizer (5) which corresponds with the first polarizer (2) in respect of a light beam-separation angle but which differs from the first polarizer (3) by 45 degrees in respect of an angle between the two separated light beams and the polarization of the beams and at least one birefringent crystal plane plate (6) which directs two parallel light beams, in planes of polarization at right angles one with another into a single beam. The first and second polarisers may be Wollaston or Rochon prisms.