Method of manufacturing polarization-maintaining optical...

Details Method of manufacturing polarization-maintaining optical... Method of manufacturing polarization-maintaining optical...

G - Physics

02

B

G02B 6/287 (2006.01) G02B 6/024 (2006.01) G02B 6/27 (2006.01) G02B 6/28 (2006.01)

Patent

CA 2309564

In a method of manufacturing a polarization-maintaining optical fiber coupler by heating lengthwise portions of two polarization-maintaining optical fibers extending side by side, and elongating the heated portions to thereby form a fused-elongated section, elongation is terminated when the cyclic changes in a coupling ratio of two polarized waves according to an elongation length at a wavelength in use are both within first two cycles, so that the coupling ratio of one of the polarized waves is equal to or less than 10% and the coupling ratio of the other one of the polarized waves is equal to or greater than 90%. This method can provide a polarization-maintaining optical fiber coupler whose coupling ratio has a large dependency on polarization with a short elongation length.

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