Title :
Single-mode fused biconical coupler optimized for polarization beamsplitting
Author :
Eisenmann, Michael ; Weidel, Edgar
Author_Institution :
Daimler-Benz AG, Ulm, Germany
fDate :
7/1/1991 12:00:00 AM
Abstract :
A single-mode fused biconical coupler for polarization beamsplitting is described. In the coupling region, standard communication fibers are used. The output fibers are polarization-maintaining. To stop the coupler drawing process accurately, the degree of polarization is measured during the drawing and is used as a criterion. Losses of 0.2 dB are typical, and a minimum extinction ratio of -27 dB is achieved. A usable spectral window as broad as 17 nm with an extinction ratio smaller than -15 dB for both output fibers is obtained. Any specified wavelength for the minimum of the extinction ratio is reached within ±3 nm
Keywords :
light polarisation; optical couplers; optical fibres; 0.2 dB; coupler drawing process; extinction ratio; losses; minimum extinction ratio; output fibers; polarization beamsplitting; single-mode fused biconical coupler; standard communication fibers; usable spectral window; Extinction ratio; Loss measurement; Manufacturing processes; Optical coupling; Optical fiber communication; Optical fiber couplers; Optical fiber polarization; Process control; Refractive index; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
