Corning Incorporated

Kristina M Jeric

Snigdharaj Kumar Mishra

William R Christoff

David T Marlowe

The present invention provides an optical fiber suitable for the manufacture of optical fiber couplers and having low macrobending loss, low cutoff wavelength, low attenuation, and low sensitivity to variations in overclad mass. One aspect of the present invention provides an optical fiber having a core having an index profile, the index profile of the core having a value of &#x3b1; of between about 1.7 and about 3.0; and a cladding region surrounding and in contact with the core, the cladding region having an outer radius of at least about 40 &#x3bc;m, wherein the optical fiber has a cutoff wavelength of between about 870 nm and about 970 nm, and a macrobending loss of below about 1 dB at a wavelength of 1550 nm when wrapped one turn around a 32 mm mandrel.

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Wilmington, NC, United States of America

Kristina M Jeric