On a sunny day in August I finally got to see the finished version of Anton Corbijn's Control, a film about the life of Ian Curtis, my father and lead singer of the band Joy Division.
Why DSL can be called a wide band technology is because it exploits OFDM which represents Orthogonal Frequency Division Multiplexing.
DSL技术之所以能够被称为宽带技术，主要是由于它的复用方式是OFDM。
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Controlled by an optical switch, a fiber Bragg grating sensing system based on spatial division multiplexing is developed under a broad-band source illumination.