| US 7,616,857 B2 | ||
| Optical fiber array substrate | ||
| Hirokazu Takeuchi, Otsu (Japan); Nobuo Funabiki, Otsu (Japan); and Kazuya Saito, Otsu (Japan) | ||
| Assigned to Nippon Electric Glass Co., Ltd., Shiga (Japan) | ||
| Filed on Feb. 22, 2008, as Appl. No. 12/36,108. | ||
| Application 12/036108 is a continuation of application No. 10/507955, granted, now 7,406,243, previously published as PCT/JP03/03053, filed on Mar. 14, 2003. | ||
| Claims priority of application No. 2002-072098 (JP), filed on Mar. 15, 2002; application No. 2002-171141 (JP), filed on Jun. 12, 2002; and application No. 2002-189090 (JP), filed on Jun. 28, 2002. | ||
| Prior Publication US 2008/0159705 A1, Jul. 03, 2008 | ||
| Int. Cl. G02B 6/00 (2006.01) | ||
| U.S. Cl. 385—137 [385/134; 385/136] | 8 Claims |
| 1. An optical fiber array substrate made of glass or crystallized glass in which crystals are precipitated in amorphous glass,
the substrate having a plurality of optical fiber securing grooves formed therein,
wherein a cross sectional shape of each of side surfaces of the substrate parallel to the grooves is a convexly rounded shape,
and each of the side surfaces is formed to be a partially cylindrical surface such that respective centers of curvature of
the side surfaces substantially coincide with each other at the center of the substrate so as to maintain a measured diameter
of the side surfaces of the substrate even when the diameter is obliquely measured in the cross sectional shape of the side
surfaces.
|