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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 7, Iss. 2 — Jun. 25, 2003
  • pp: 53–58

Mode Coupling within Inner Cladding Fibers

Byeong-Ha Lee, Tae-Jung Eom, Myoung-Jin Kim, Un-Chul Paek, and Tae-Sang Park  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 7, Issue 2, pp. 53-58 (2003)

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We report the formation of inner cladding modes in the optical fiber having an inner cladding structure. The inner cladding layer located between the core- and the cladding- layers of a conventional fiber might have, so called, inner cladding mode(s). The brief history of the inner cladding fiber and the spectral properties of the inner cladding mode are presented. By utilizing fiber gratings, the spectral properties of the inner cladding mode formed in Dispersion Compensating Fiber (DCF) are discussed. It was observed that one resonant peak of a long-period fiber grating was not sensitive to the variation on the cladding surface. With a fiber Bragg grating, a small group of unusual resonant Peaks was observed between the main Bragg Peak and the series of usual Peaks resulted from the mode coupling to counter-propagating cladding modes. Within the DCF by using fiber gratings, it is noted, at least one mode can be coupled to the inner cladding mode and a few outer cladding modes are severely affected by the inner cladding of the fiber.

© 2003 Optical Society of Korea

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2330) Fiber optics and optical communications : Fiber optics communications

Original Manuscript: March 31, 2003
Published: June 1, 2003

Byeong-Ha Lee, Tae-Jung Eom, Myoung-Jin Kim, Un-Chul Paek, and Tae-Sang Park, "Mode Coupling within Inner Cladding Fibers," J. Opt. Soc. Korea 7, 53-58 (2003)

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