略語大辞典 [Opt] 29 DOCM digital optical conversion module ディジタル光変換モジュール. 光モデム.digital optical conversion module; an optical modem; converts an analog electrical signal into a computer-compatible digital signal to drive an LED to transmit the modulated optical signal through an optical fiber to the host compu 丸善「略語大辞典」JLogosID : 11872219