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Optical 90-deg hybrid of birefringent crystals for freely propagating laser beams
- Source :
- Optical Engineering. 49:125004
- Publication Year :
- 2010
- Publisher :
- SPIE-Intl Soc Optical Eng, 2010.
-
Abstract
- An optical 90-deg hybrid of birefringent crystals for freely propagating laser beams is presented. It consists principally of a quarter-wave plate, two pairs of birefringent crystal plates, and a polarization analyzer. The splitting and recombination of the signal and local-oscillator beams are achieved through the birefringence of the crystals, and a 90-deg phase shift is introduced between orthogonally polarized beam components by use of a quarter-wave plate. The optical hybrid has a self-compensating light path, and its correct function is demonstrated in a self-heterodyne measurement setup.
- Subjects :
- Spectrum analyzer
Birefringence
Materials science
business.industry
General Engineering
Physics::Optics
Polarization (waves)
Laser
Atomic and Molecular Physics, and Optics
law.invention
Optics
law
Optoelectronics
Heterodyne detection
business
Beam (structure)
Beam splitter
Free-space optical communication
Subjects
Details
- ISSN :
- 00913286
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Optical Engineering
- Accession number :
- edsair.doi...........a5fae459c2bef1d7f19dde99eb3400ca