Title :
Self-amplified transceivers for local-access star networks
Author :
Feuer, M.D. ; Feldman, R.D. ; Zyskind, J.L. ; Wood, T.H. ; Sulhoff, J. ; Lion, K.-Y. ; Burrus, C.A.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
We describe a cost-effective approach to fiber-amplified networks based on dual use of lasers and other components for both signal and pump functions. The concept is demonstrated in a broadband, passive star network suitable for local access applications, using bidirectional transmission on a single fiber. Sensitivity improvement of 8.2 dB is achieved in the downlinks operating at 1.55-μm wavelength, while uplinks at 1.48 μm provide both pump and data. A model for receiver sensitivity incorporating the effects of spontaneous emission noise is used to explain the effect of optical filtering and to assess the potential for further improvement.
Keywords :
fibre lasers; optical fibre LAN; optical fibre filters; optical fibre networks; optical noise; optical pumping; optical receivers; sensitivity; spontaneous emission; transceivers; 1.48 mum; 1.55 mum; bidirectional transmission; broadband passive star network; cost-effective approach; downlinks; fiber-amplified networks; lasers; local access applications; local-access star networks; optical filtering; pump functions; receiver sensitivity; self-amplified transceivers; sensitivity improvement; signal functions; single fiber; spontaneous emission noise; uplinks; Downlink; Fiber lasers; Laser excitation; Optical filters; Optical noise; Optical receivers; Pump lasers; Spontaneous emission; Stimulated emission; Transceivers;
Journal_Title :
Photonics Technology Letters, IEEE
