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Planar Rowland spectrometer for fiber-optic wavelength demultiplexing (1981)

Yen, H. W. ; Tangonan, G. L. ; Friedrich, H. R. ; [et al.]

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Publication Date: 2019-06-28

Description: A planar Rowland spectrometer was fabricated and characterized as a wavelength demultiplexer for multimode fiber-optic applications. The spectrometer consisted of a planar multimode glass waveguide with two curved end faces and a cylindrical concave attached to one of the end faces. Semiconductor lasers with wavelengths between 0.825 and 0.845 micron were used for the measurements. Cross-talk isolation between two adjacent fibers with center-to-center separation of 175 microns (100 A in wavelength difference) was measured to be 18 dB. The device's performance was limited by grating diffraction efficiency, optical aberration, waveguide dispersion, and waveguide losses.

Keywords: OPTICS

Type: Optics Letters; 6; Dec. 198

Format: text

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