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Optical systems with antireciprocal polarization rotators

  • US 4,671,621 A
  • Filed: 04/29/1985
  • Issued: 06/09/1987
  • Est. Priority Date: 04/29/1985
  • Status: Expired due to Term
First Claim
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1. An optical system, comprising:

  • a source of electromagnetic radiation;

    a component of said system, capable of optical communication with said source, serving to transmit or reflect at least a portion of the electromagnetic radiation emitted by said source; and

    a substantially antireciprocal polarization rotator, capable of optical communication with said source and said component, characterized in thatsaid polarization rotator includes two or more regions which are capable of subjecting electromagnetic radiation emitted by said source to elliptic birefringences, the sign and/or magnitude of the linear, or the sign and/or magnitude of the circular, components of said elliptic birefringences differing from region to region, and the length of each region, with the exception of either the first or last reigon, being substantially equal to one half the birefringent period of the region, the length of the first or last region being substantially equal to one quarter the birefringent period of the first or last region.

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