Apparatus and method for obtaining mode field diameter of optical fiber
AssigneeNTT, Inc.
InventorsAtsushi NAKAMURA, Yusuke KOSHIKIYA
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Abstract
The mode field diameter acquisition device according to the present disclosure is a device for acquiring a mode field diameter of each spatial mode of an optical fiber having a core, through which a plurality of spatial modes can propagate, from a near field pattern, and includes a mode field diameter acquisition unit configured to acquire a mode field diameter of a freely-selected spatial mode using a near field pattern of the spatial mode, and a mathematical expression based on a variational expression of a propagation constant of the spatial mode.
Claims8
A mode field diameter acquisition device for acquiring a mode field diameter of each spatial mode of an optical fiber having a core, through which a plurality of spatial modes can propagate, from a near field pattern, the mode field diameter acquisition device comprising
- a mode field diameter acquisition unit configured to acquire a mode field diameter of a freely-selected spatial mode using a near field pattern of the spatial mode, and a mathematical expression based on a variational expression of a propagation constant for the spatial mode.
A mode field diameter acquisition method for acquiring a mode field diameter of each spatial mode of an optical fiber having a core, through which a plurality of spatial modes can propagate, from a near field pattern, the mode field diameter acquisition method comprising
- a mode field diameter acquisition procedure for acquiring a mode field diameter of a freely-selected spatial mode using a near field pattern of the spatial mode, and a mathematical expression based on a variational expression of a propagation constant of the spatial mode.
Dependencies are inferred from the claim text.