Degree of polarization in jointed fibers: the Lyot depolarizer

Mochizuki, K.

doi:10.1364/ao.23.003284

Cited by 41 publications

(24 citation statements)

References 10 publications

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“…The specific situation of input beam in which the spectral components of the superposition are uniformly and completely polarized [P in r P in st P in 1] with the same state of polarization, for example, linear, and different wavelengths has been previously studied in [10][11][12][13][14][15], where uniformly polarized polychromatic beams emitted by a single source are considered. In this case, at the output of the LD, P out st is close to zero, and then the beam is locally and globally depolarized.…”

Section: Incident Beam: Superposition Of Monochromatic Uniformly and mentioning

confidence: 99%

“…A device used for this purpose is the Lyot depolarizer (LD). Since the introduction of this device a long time ago [8], many theoretical and experimental works has been devoted to the study of the LD [9][10][11][12][13], and several applications have recently been proposed [14][15][16][17]. They are manufactured with two parallel synthetic crystal quartz plates assembled with their optic axes lying in the plane of the plates and forming a 45°angle (see Fig.…”

Section: Introductionmentioning

confidence: 99%

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Polarization changes at Lyot depolarizer output for different types of input beams

2012

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Lyot depolarizers are optical devices made of birefringent materials used for producing unpolarized beams from totally polarized incident light. The depolarization is produced for polychromatic input beams due to the different phase introduced by the Lyot depolarizer for each wavelength. The effect of this device on other types of incident fields is investigated. In particular two cases are analyzed: (i) monochromatic and nonuniformly polarized incident beams and (ii) incident light synthesized by superposition of two monochromatic orthogonally polarized beams with different wavelengths. In the last case, it is theoretically and experimentally shown that the Lyot depolarizer increases the degree of polarization instead of depolarizes.

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Section: Incident Beam: Superposition Of Monochromatic Uniformly and mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polarization changes at Lyot depolarizer output for different types of input beams

2012

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“…Lyot depolarizers consist of two crystalline quartz plates assembled with their optical axes lying in the plane of the plates, aligned at 45 deg. 2,3 One plate is twice the thickness of the other. This combination creates various degrees of elliptical polarization as a function of wavelength.…”

Section: Introductionmentioning

confidence: 99%

Cholesteric liquid crystal depolarizer

Zhang

Luo

et al. 2007

Opt. Eng

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Abstract. The design and performance test of a cholesteric liquid crystal depolarizer ͑CLCD͒ is presented. This new depolarizer is a wedge-shaped cell filled with cholesteric liquid crystal material. By placing a CLCD in its path, the incident light beam is divided into a great number of micro beams in space, and each micro light beam has different polarization state and orientation, hence achieving the depolarization effect. Over a conventional optical depolarizer, the CLCD is easy built and insensitive to the polarization orientation of incident light.

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“…A superluminescent diode was depolarized to better than 1% by a Lyot depolarizer made with 5-and 10-m sections of fiber of 4-mm beat length [4]. The input spectrum is usually taken to be continuous as for a SLD [5], or effectively continuous as for a laser with many modes within the spectral envelope [6]. The depolarization can depend on the spectral shape as well as the width of such a source.…”

Section: Introductionmentioning

confidence: 99%