Image fiber skew characteristics

Moriya Nakamura; Toshimichi Otsubo; Ken-ichi Kitayama

doi:10.1117/12.384427

27 April 2000 Image fiber skew characteristics

Moriya Nakamura, Toshimichi Otsubo, Ken-ichi Kitayama

Author Affiliations +

Proceedings Volume 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II; (2000) https://doi.org/10.1117/12.384427
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

Skew of an image fiber, which has more than ten thousands of cores in a common cladding, was measured by a novel measurement method for the first time. This method can measure the time-of-flight difference between individual cores over the whole area of an image circle. The measurement results reveals that a test 100-m-long image fiber has skew of 5 ps/m, and the time-of-flight distributes randomly in the whole area of the image circle due to nonuniformity of the core dimension. It is also experimentally shown that the skew of an image fiber increases by bending. The theoretical analysis reveals that the bending-induced skew depends neither on the radius of curvature nor the shape of the curve but it depends only on the number of turns it is wound. The numerical calculation of skew by using typical parameters of image fibers shows that the winding have to be restricted to less than 12.5 turns to achieve a transmission speed of over 1 Gbps/ch. Lastly we propose twisted image fiber and a 8-shaped bobbin to suppress the skew due to bending.

Citation Download Citation

Moriya Nakamura, Toshimichi Otsubo, and Ken-ichi Kitayama "Image fiber skew characteristics", Proc. SPIE 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II, (27 April 2000); https://doi.org/10.1117/12.384427

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