Fig. 1: A luminescent detector with an active area of 126 square centimeters. The detector consists of a bundle of fibers doped with organic dye molecules. The fibers absorb incident blue light and emit green light, part of which is guided through the fibers to a circular bundle with a 0.2-square centimeter diameter. This largely increases the active area of the detector. Using this detector we have achieved a data rate in excess of 2 Gbps.

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