Title :
Sensitivity of direct-detection lightwave receivers using optical preamplifiers
Author :
Kazovsky, Leonid G. ; Tonguz, Ozan K.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA, USA
Abstract :
A simple technique for analyzing the sensitivity and bit-error-rate (BER) performance of direct-detection lightwave receivers using optical preamplifiers is presented. The analysis provides closed-form expressions for the system performance and includes the impact of phase noise. For a negligible linewidth, the theory predicts an average signal energy of 42.3 photons/bit at a BER of 10/sup -9/. For comparison, a more accurate analysis predicts an average signal energy of 38 photons/bit under the same conditions.<>
Keywords :
electron device noise; optical communication equipment; receivers; semiconductor junction lasers; bit-error-rate; closed-form expressions; direct-detection lightwave receivers; optical preamplifiers; phase noise; semiconductor laser linewidth; sensitivity; signal energy; system performance; Bit error rate; Closed-form solution; Optical noise; Optical receivers; Optical sensors; Performance analysis; Phase noise; Preamplifiers; Signal analysis; System performance;
Journal_Title :
Photonics Technology Letters, IEEE
