×

Device for optical heterodyne detection and mirror system suitable for use in such a device

  • US 5,237,442 A
  • Filed: 05/11/1992
  • Issued: 08/17/1993
  • Est. Priority Date: 06/12/1990
  • Status: Expired due to Fees
First Claim
Patent Images

1. A device for optical heterodyne or homodyne detection of an optical signal beam, which device comprises a local oscillator on optical system comprising a polarization-sensitive beam-splitting layer for splitting the signal beam into two orthogonally polarized sub-beams (p, s) and a beam-combining layer for combining signal beam radiation with radiation from the local oscillator, said device further comprising a detection system for converting the combined radiation into at least one electric signal which is suitable for further processing, characterized in that the beam-splitting layer and the beam-combining layer consists of two portions each, said four portions enclosing four angles (α

  • , β

    , γ

    , δ

    ,), the value of at least one of the angles being different from 90° and

    the sum of two angles located opposite each other being 180°

    .

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×