1995-05-15
Planar Fresnel lens photoimprinted in a germanium-doped silica optical waveguide
Publication
Publication
Optics Letters , Volume 20 - Issue 10 p. 1136- 1138
A gradient-thickness Fresnel lens was photoimprinted in the germanium-doped core layer of a single-mode planar waveguide on silica by exposure to ultraviolet light through a mask, which increases the refractive index in the lens region by ≈5 × 10−3. The lens is used to collimate the output of a standard single-mode optical fiber butt coupled to the waveguide at a wavelength of 1.3 μm. The method is applicable to the mass production of complex diffractive elements in a planar waveguide geometry.
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doi.org/10.1364/OL.20.001136 | |
Optics Letters | |
Organisation | Department of Electronics |
Albert, J, Huttunen, J., & Saarinen, J. (1995). Planar Fresnel lens photoimprinted in a germanium-doped silica optical waveguide. Optics Letters, 20(10), 1136–1138. doi:10.1364/OL.20.001136
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