%0 Journal Article
%T 4-Pulsed Amplitude Modulation Optical Downlink Signals Reception in Optical Access Systems Using Different  Bandwidth Optical Bessel Filter
%A Fuping Chen
%A Yufeng Shao
%A Lao Chen
%A Shilu Shen
%J Optics and Photonics Journal
%P 89-93
%@ 2160-889X
%D 2016
%I Scientific Research Publishing
%R 10.4236/opj.2016.68B015
%X <div style=\"text-align:justify;\">
	<span style=\"line-height:1.5;\">A novel scheme which can realize high-speed optical signals transmission and reception by using 4-pulsed amplitude modulation (4-PAM) and demodulation in 10 Gb/s passive optical access systems with different bandwidth optical Bessel filter (OBF) is introduced. In this scheme, a PAM sequence generator module, an M-ary pulse generator module and one Mach-Zehnder intensity Modulator (MZM) are employed for generating the 10 Gb/s optical 4-PAM signals. And then, the generated optical 4-PAM signal achieves transmission over 20 km single mode fiber (SMF) for downstream (DS) access links application. Finally, the optical 4-PAM signal after transmission is directly detected and demodulated. We measure time-domain sequential waveform curves, optical spectrum curves, and eye-diagrams, and analyze the receiver sensitivity of 10 Gb/s 4-PAM signals before and after transmission. The received performance of the optical 4-PAM signals after transmission over 20 km single mode fiber (SMF) with different bandwidth OBF has also been analyzed.</span>
</div>
%K Passive Optical Access
%K 4-PAM
%K OBF
%K Downlink
%K Bit Error Rate (BER)
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=70308