Wavelength insensitive passive polarization converter employing

Details Wavelength insensitive passive polarization converter employing Wavelength insensitive passive polarization converter employing

1997-10-30

2000-01-04

Epps, Georgia

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359254, 385 2, 385 11, 385 13, 385 28, 385129, G02F 103, G02F 1035, G02B 626, G02B 610

Patent

active

060116412

ABSTRACT:
The present invention relates to a wavelength insensitive passive polarization converter which can rotate the direction of optic axis of waveguide by employing poled electro-optic polymer waveguides and a method for controlling the optic axis direction of the poled polymer waveguides. A passive polarization converter of present invention is equipped with poling electrodes at top and bottom of a planar waveguide consisting of three layers of electro-optic polymer, and it comprises: a polarizer in which poling-induced optic axis aligned horizontally; a polarization rotator in which the azimuth angle of the optic axis is slowly changed along the propagation direction from horizontal to vertical direction; and, an analyzer in which poling-induced optic axis aligned vertically. The polarization converter of the invention which contains no periodic structures, is much less sensitive to wavelength, channel dimensions and polarizing structures in principle and may be more easily fabricated by the design of the poling electrode structure, as compared with prior art devices containing such structures.

REFERENCES:
patent: 5555326 (1996-09-01), Hwang et al.
R.C. Alferness, Efficient Waveguide Electro-Optical; TE-TM Mode Coverter/Wavelength Filter, Apppl. Phys. Lett., 26(7):513-515 (1980).
R.C. Alferness and L.L. Buhl, Waveguide electro-Optic Polarization Transformer, Appl. Phys. Lett., 38(9):655-657 (1981).
J.J.G.M. van der Tol et al., A New Short and Low-Loss Passive Polarization Converter on InP, IEEE Photon. Technol. Lett., 7(1):32-34 (1995).
Y. Shani et al.l, Polarization Rotation in Asymmetric Periodic Loaded Rib Waveguides, Appl. Phys. Lett., 59(11):1278-1280 (1991).
H. Heidrich et al., Passive Mode Converter with a Periodically Tilted InP/GaInAsP Rib Waveguide, IEEE PHoton. Technol. Lett., 4(1):34-36 (1992).
Y. Inoue et al., Polarization Mode Converter with Polyimide Half Wveplate in Silica-Based Planar Lightwave Circuits, IEEE Photon. Technol. Lett., 6(5):626-628 (1994).
Min-Cheol Oh et al., Wavelangth Insensitive Passive Polarization Converter Fabricated by Poiled Polymer WAveguides, Appl. Phys. Lett., 67(13):1821-1823 (1995).
Oh, Min-Cheol, Sang-Yung Shin and Wol-Yon Hwang, "Explicit Vector Beam Propagation Method for Uniaxial Poled Polymer Waveguide Devices," presented at the IEEE Lasers and Electro-Opt. Soci, Annu. Meet. 1994, paper IO1.1.

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