Impact of spontaneous emission noise on the sensitivity of direct-detection lightwave receivers using optical amplifiers
- 16 August 1990
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 26 (17) , 1343-1344
- https://doi.org/10.1049/el:19900865
Abstract
A simple technique for analysing the sensitivity and bit-error rate performance of direct-detection lightwave receivers using optical amplifiers is presented. The analysis provides closed-form expressions for the system performance. For zero (negligible) linewidth, the theory predicts an average signal energy of 42.3 photon/bit at BER = 10−9. In comparison, more accurate techniques predict an average signal energy of 38 photon/bit under the same conditions.Keywords
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