Title :
Optical ring networks with distributed amplification
Author_Institution :
Bellcore, Red Bank, NJ, USA
fDate :
4/1/1991 12:00:00 AM
Abstract :
The passive-access optical ring has long been ignored because, owing to optical-power constraints, it can support only on the order of 10 nodes spanning 10 km. The emergence of the practical optical amplifier raises the possibility of surmounting this limitation, but only if the accompanying amplified spontaneous emission (ASE), recirculating indefinitely around the ring, can be controlled. It is shown that through proper design, the spontaneous emission can be held to very low ( mu W) levels, thus permitting the construction of amplified 2.5 Gb/s ring networks supporting several hundred nodes spanning several hundred kilometers. Applications are expected in high-speed multiaccess data networks and in survivable interoffice facilities.<>
Keywords :
fibre lasers; optical communication equipment; optical links; ring lasers; superradiance; 2.5 Gbit/s; Er/sup 3+/ doped fibre ring amplifiers; amplified spontaneous emission; controlled ring recirculation; distributed amplification; high-speed multiaccess data networks; optical amplifier; optical-power constraints; passive-access optical ring; ring networks; survivable interoffice facilities; High speed optical techniques; Optical amplifiers; Optical coupling; Optical fiber networks; Optical network units; Optical pumping; Optical receivers; Optical saturation; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
