Glass bonded fiber array and method for the fabrication thereof

Abstract

In accordance with the present invention a fiber optic array is provided. The array includes a substrate having a fiber support surface. The array further includes an optical fiber having a fiber portion that includes an un-jacketed, un-buffered optical core segment. The un-jacketed, un-buffered optical core segment is placed in contact with the fiber support surface to orient the optical core segment at a selected position relative to the support surface. In addition, the array includes a solder glass chemically bonded to the optical core segment and the fiber support surface so that the optical core segment is secured at a predetermined location relative to the support surface of the substrate. A method for fabricating such a fiber optic array is also provided.

Description

Technical field [0001] The present invention generally relates to fiber optic bundles, and more specifically, the present invention relates to a fiber optic bundle having a buffer-free, non-jacketed optical fiber fastened to a support member with welding glass. Background technique [0002] In applications ranging from digital communications to optical computing, the use of multiple optical channels (such as optical fibers) has become quite common with increasing system bandwidth requirements. At the same time, miniaturization is still an important goal in these applications. High fiber packing density helps to achieve miniaturization and increase space bandwidth products. In addition, since the fiber core must be accurately aligned with other devices or fibers of the system, the precise positioning of the fiber core is a key goal in obtaining acceptable system performance. Fiber bundles provide an ideal method for handling multiple optical fibers while striving to achieve miniat...

AI Technical Summary

Problems solved by technology

In addition, some commonly used bonding materials can absorb moisture, which can significantly reduce the ability of the bonding material to firmly fasten the fibers to each other and to the support element

Absorption of moisture can also tend to cause the bonding material to swell, which can lead to dimensional changes in the bonding material, which can damage the connection between the optical fiber and the support element

For example, dimensional changes from the bonding material can lead to movement or even detachment of the optical fiber from the support element

In addition, long-term exposure to other environmental conditions such as heat, oxidation, and photosensitive degradation can lead to cracking of the bonding material over the period of said exposure

Another disadvantage associated with the use of certain bonding materials is the unacceptable requirement of very long processing times, often at elevated temperatures, which can hinder mass production

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