A Monochromatic Depolarizer*†

Billings, Bruce H.

doi:10.1364/josa.41.000966

Cited by 79 publications

(27 citation statements)

References 6 publications

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“…Recent results [l] , [ 2 ] demonstrate that through a careful choice of waveguide fabrication parameters, high efficiency can be attained. In this research, micropositioners were used to align one input and one output fiber to a single waveguide, in what amounts to a tedious and time-consuming manual operation.…”

Section: Discussionmentioning

confidence: 99%

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Degree of polarization in the Lyot depolarizer

Burns¹

1983

J. Lightwave Technol.

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Section: Discussionmentioning

confidence: 99%

“…YOT DEPOLARZERS [ 11, [2] have recently attracted renewed attention due to the successful use of one in reducing polarization noise in a fiber-optic gyroscope [ 3 ] . Recently, such a device has been reported [4] which was constructed from birefringent single-mode fibers rather than the usual birefringent crystal plates.…”

Section: I Introductionmentioning

confidence: 99%

Degree of polarization in the Lyot depolarizer

Burns¹

1983

J. Lightwave Technol.

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“…Billings proposed the possibility of depolarizing monochromatic beams using a temporally varying retarder. 27 This method is based on modifying the polarization state of the beam faster than the typical time constants of the relevant optical components (detector, amplifier, etc.). In this case, the polarization scrambling is performed over the time domain.…”

Section: Computer-generated Infrared Depolarizer By Use Of Space-variantmentioning

confidence: 99%

Formation of complex wavefronts by use of quasiperiodic subwavelength structures

et al. 2004

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Space-variant Pancharatnam-Berry phase optical elements based on computer-generated subwavelength gratings are presented. By continuously controlling the local orientation and period of the grating we can achieve any desired phase element. Unlike diffractive and refractive elements, the phase is not introduced through optical path differences, but results from the geometrical phase that accompanies space-variant polarization manipulation. We introduce and experimentally demonstrate Pancharatnam-Berry phase optical elements (PBOEs) such as polarization beam-splitters, optical switches and spiral phase. We also introduce and experimentally demonstrate quanitized pancharatnam-Berry phase diffractive optics. We realized quantized geometrical blazed polarization diffraction gratings, as well as a polarization dependent focusing lens for CO 2 laser radiation at a wavelength of 10.6 micron on GaAs substrates. We also demonstrate the formation of propagation-invariant linearly polarized axial symmetric beams by use of quantized Pancharatnam-Berry optical elements. Finally a novel method for real time polarimetry and infrared polarization scrambler by use of quasi-periodic subwavelength structures is presented.

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“…Here, we investigate the use of a high-birefringence fiber with a 45 twist as a laser depolarizer. The bulk optics analog is made with two birefringent crystals oriented at 45 and is known as a "Lyot depolarizer" [2]. The fiber Lyot depolarizer consists of two lengths of highbirefringence fiber spliced with an axis rotation of 45 .…”

Section: Introductionmentioning

confidence: 99%

“…The results clearly demonstrated the importance of equal excitation of the fiber's principal axes. The first Lyot depolarizers were made with birefringent crystal plates [2]. In the early work it was found that the plates should be of unequal length with the best ratio of lengths about 2 : 1.…”

Section: Introductionmentioning

confidence: 99%