Abstract
Novel optical add / drop multiplexers (OADMs) using slanted fiber Bragg gratings (S-FBGs) are proposed. The S-FBGs couple the guided-mode to radiation modes, and they also couple specific radiation modes to the guided mode. A set of the S-FBGs located nearby with each other has functions of OADMs. The proposed OADM requires no optical circulators which are components of usual multiplexers using FBGs. Low-cost and small size optical filters may be constructed. Calculations results successfully show the possibilities of OADMs.
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