ATHERMAL OPTICAL WAVEGUIDE GRATING DEVICE

摘要

The invention relates to an athermal optical waveguide grating device (20). The optical waveguide grating device (20) includes a fiber Bragg grating member (22) secured and bonded to a supporting substrate member (28) with a low thermal expansion securing glass (30), such as a copper alumino silicate glass. The inventive devices and method of making the devices include the utilization of intermediate solid insert members (40, 42) between the fiber (24) and a negative thermal expansion substrate (38).