Title :
Subcarrier Digital Modulation Based Passive Optical Network
Author :
Ueda, Hiromi ; Tsuboi, Toshinori ; Kou, Masayuki
Author_Institution :
Sch. of Comput. Sci., Tokyo Univ. of Technol., Hachioji, Japan
Abstract :
This paper proposes a Subcarrier Digital Modulation based Passive Optical Network (SDM-PON) architecture to economically provide higher bit rate services to users. As a first step, we assume that 16-QAM is used as a digital modulation, and service bit rate of 1 Gbps is constantly provided to each user. To examine its feasibility, we first discuss an electrical SDM-PON that yields comprehensive studies by simplified simulations. We next investigate an optical SDM-PON that is our objective. For an electrical SDM-PON, we show the feasibility of the system that supports up to 32 ONUs. For an optical SDM-PON, we show that the system can support up to 16 ONUs; we clarify each ONU needs to send signals using different wavelength to avoid the beating noise. We also propose a new assignment of subcarriers to the wavelengths to increase the interval of the subcarrier frequency in the optical domain. We also specify the subcarrier frequencies for an optical SDM-PON.
Keywords :
optical modulation; passive optical networks; 16-QAM; bit rate 1 Gbit/s; electrical SDM-PON architecture; optical SDM-PON; optical domain; passive optical network; subcarrier digital modulation; subcarrier frequency; Adaptive optics; High speed optical techniques; Optical fibers; Optical filters; Optical modulation; Optical network units; Passive optical networks;
Conference_Titel :
Information and Telecommunication Technologies (APSITT), 2012 9th Asia-Pacific Symposium on
Conference_Location :
Santiago and Valparaiso
Print_ISBN :
978-1-4673-2434-2