Abstract
The mode properties of polymer segment cladding optical fibers are
investigated. Numerical results demonstrate that for the previous reported
fiber configurations, the LP<sub>11</sub> mode is generally not the lowest loss high-order mode. As a
result, the fibers are not single-mode guided. Improved design is presented
to eliminate all the high-order modes of the fibers. In addition, a modified
segment cladding optical fiber is proposed. The segment profile of the fiber
is modified to effectively eliminate the high-order modes and confine the
fundamental mode more effectively simultaneously. Numerical investigations
demonstrate that single-mode operation with low confinement and bending loss
can be achieved in the proposed fiber.
© 2010 IEEE
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