Abstract
Large N × N passive star couplers can be quite useful for multiple-access frequency-division-multiplexed (FDM) networks or switches.1 However, the inherent 1/N splitting loss as well as the excess loss can limit the size of the star. One way to accommodate more users, N, is to incorporate an erbium-doped fiber (EDF) amplifier2 in each output port to compensate for the star loss. A 14-dB sensitivity enhancement has been achieved3 by using an EDF in an FDM frequency-shift-keyed (FSK) 1-Gb/s system. A major disadvantage is that each receiver requires its own EDF, pump laser, and pump/signal combiner, which can be quite expensive.
© 1991 Optical Society of America
PDF ArticleMore Like This
Herman M. Presby and C. Randy Giles
FD1 Optical Amplifiers and Their Applications (OAA) 1991
A. E. Willner, E. Desurvire, H. M. Presby, and C. A. Edwards
WB5 Optical Amplifiers and Their Applications (OAA) 1990
Wann-Yih Guo, Yang-Kuang Chen, Jen-Yu Zeng, and Sien Chi
MD9 Optical Amplifiers and Their Applications (OAA) 1993