• Photonics Research
  • Vol. 3, Issue 4, 177 (2015)
Emiliya Dimova1, Andon Rangelov2,3,*, and Elica Kyoseva3
Author Affiliations
  • 1Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussée, 1784 Sofia, Bulgaria
  • 2Department of Physics, Sofia University, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria
  • 33Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road,487372 Singapore, Singapore
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    DOI: 10.1364/PRJ.3.000177 Cite this Article Set citation alerts
    Emiliya Dimova, Andon Rangelov, Elica Kyoseva, "Tunable bandwidth optical rotator," Photonics Res. 3, 177 (2015) Copy Citation Text show less
    Experimental setup. The source S, iris I, lens L1, lens L2, and polarizer P1 form a collimated beam of white polarized light. Polarizer P2 and lens L3 focus the beam of output light onto the entrance F of an optical fiber connected to a spectrometer. The two parts of the composite polarization rotator, which is constructed of a stack of multiple-order half-wave plates, are denoted as CPR1 and CPR2.
    Fig. 1. Experimental setup. The source S, iris I, lens L1, lens L2, and polarizer P1 form a collimated beam of white polarized light. Polarizer P2 and lens L3 focus the beam of output light onto the entrance F of an optical fiber connected to a spectrometer. The two parts of the composite polarization rotator, which is constructed of a stack of multiple-order half-wave plates, are denoted as CPR1 and CPR2.
    Measured transmittance for two different composite broadband rotators. The blue dashed line represents a rotator with six half-wave plates, while the red solid line represents a rotator with 10 half-wave plates. The black dash-dotted line represents a rotator comprising two half-wave plates for easy reference.
    Fig. 2. Measured transmittance for two different composite broadband rotators. The blue dashed line represents a rotator with six half-wave plates, while the red solid line represents a rotator with 10 half-wave plates. The black dash-dotted line represents a rotator comprising two half-wave plates for easy reference.
    Measured transmittance for two different composite narrowband rotators. The blue dashed line represents a rotator with six half-wave plates, while the red solid line represents a rotator with 10 half-wave plates. The black dash-dotted line represents a rotator comprising two half-wave plates for easy reference.
    Fig. 3. Measured transmittance for two different composite narrowband rotators. The blue dashed line represents a rotator with six half-wave plates, while the red solid line represents a rotator with 10 half-wave plates. The black dash-dotted line represents a rotator comprising two half-wave plates for easy reference.
    Broadband Half-Wave Plates
    N(θ1;θ2;;θN)
    3(30; 150; 30)
    5(51.0; 79.7; 147.3; 79.7; 51.0)
    Narrowband Half-Wave Plates
    N(θ1;θ2;;θN)
    3(150; 90; 30)
    5(137.0; 93.7; 158.2; 52.7; 31.2)
    Table 1. Calculated Angles (in Degrees) of the Optical Axes of the Individual Half-Wave Plates to Implement Composite Sequences of Broadband and Narrowband Half-Wave Plates