| 摘要 |
An optical fiber for use in making components of an optical communication system has cladding and core materials the constituents of which cause a component made from the fiber to have a rate of change with respect to temperature of a response to a signal which passes through zero at a temperature T<SUB>m</SUB>, where the temperature T<SUB>m </SUB>is at or near a selected temperature, or falls within a selected temperature range; and the value of T<SUB>m </SUB>of a fiber can be controllably changed by changing the concentration of a selected constituent of the fiber, such as, for example, the concentration of boron.
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