Dispersion compensation using only fiber Bragg gratings

摘要

Efficient and low cost dispersion compensation is necessary tonachieve useful transmission distances in optical communication systemsnat bit rates above 10 Gb/s. In the paper, we present a novel method forndispersion compensation that uses three fiber gratings in series. Thisnmethod eliminates the requirement for an optical circulator, commonlynused in grating-based dispersion compensators. As a result, our devicenis inexpensive to fabricate and have a low insertion loss. We present antheoretical model that predicts how the efficiency of the device can benmaximized. We also present experimental results showing completendispersion compensation for 30-ps pulses, broadened to 67 ps bynpropagating through 10 km of standard, singlemode fiber