Modal-noise generation in biconical-taper couplers.
The modal noise resulting from the dividing of coherent light in fused biconical-taper star and access couplers is measured. The theoretical explanation of the results is presented. It is found that modal-noise generation is not severe even in those cases in which the light is strongly subdivided by a biconical-taper star coupler with a large number of ports. The performance of most digital fiber systems using such couplers is not expected to be significantly degraded by the measured levels of modal noise.
Kawasaki
B S
BS
Hill
K O
KO
Tremblay
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Y