Light waveguide type polarized light beam splitter

Details Light waveguide type polarized light beam splitter Light waveguide type polarized light beam splitter

1992-10-28

1994-06-07

Lerner, Martin

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359488, 359495, 359496, 385 11, G02B 108, G02B 530, G02B 2728

Patent

active

053194942

ABSTRACT:
A polarized beam splitter is provided for transmitting a beam of linearly polarized light vibrating in a predetermined plane. A titanium diffused layer is developed on the lithium niobate substrate and then, a portion of the same is treated by proton exchange thus forming a proton exchanged region. The boundary surface between the titanium diffused and proton exchanged regions is used as a polarizing plane allowing an incoming polarized light vibrating in the predetermined plane to pass through and a polarized light vibrating at a right angle to the plane to reflect.

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De Micheli et al, "Fabrication and Characterization of Titanium Indiffused Proton Exchange (Tipe) Waveguides in Lithium Niobate," Optics Communications, vol. 42, No. 2, 15 Jun. 1982, pp. 101 to 103.
N. Goto and G. L. Yip, "A TE-TM Mode Splitter in LiNbO.sub.3 by Proton Exchange and Ti Diffusion," Journal of Lightwave Technology, vol. 7, No. 10, Oct. 1989, pp. 1567-1574.

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