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Optimum Mode Field Diameter Region in Thermally-Diffused Expanded Core Fiber
Mitsuru KIHARA Tsuyoshi NAKASHIMA Michito MATSUMOTO
IEICE TRANSACTIONS on Communications
Publication Date: 1993/01/25
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Optical Communication
fiber, connector, mode field diameter, connection loss,
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We indicate the existence of optimum expanded mode field diameters in thermally-diffused expanded core (TEC) fiber. The optimum ranges under our experimental conditions were from 14µm to 18µm for both 1.3µm-single-mode fiber and 1.55µm-dispersion-shifted fiber. By applying the TEC fiber fabricated in our experimental conditions to a multifiber connector, the connection loss can be reduced to less than 0.2dB without improving fiber and connector ferrule fabrication accuracy.