ETRI Journal

  • 제31권2호
  • /
  • Pages.231-233
  • /
  • 2009
  • /
  • 1225-6463(pISSN)
  • /
  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
권호 표지

Channel Enlargement of PON System Using Nonreciprocal Multiplexing Filter Based on CWDM

  • Kim, Bong-Kyu (IT Convergence Technology Research Laboratory, ETRI) ;
  • Yoon, Bin-Young (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Kwon, Yool (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI)
  • 투고 : 2008.10.29
  • 심사 : 2009.02.17
  • 발행 : 2009.04.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

We propose a nonreciprocal filter based on coarse wavelength division multiplexing (CWDM) that reduces the upstream channel insertion loss in a passive optical network (PON). We also propose a method to increase the number of channels/optical network units (ONUs) in PON systems using the proposed filter to reduce the service cost per subscriber. Experimental results show that the PON system with the proposed 4-channel filter can reduce the power budget of the upstream and increase the number of ONUs by 3 to 4 times that of a conventional time-division multiplexing PON.

키워드

참고문헌

  1. J.R. Stern et al., “Passive Optical Local Networks for Telephony Applications and Beyond,” Electronics Lett., vol. 23, no. 24, 1988, pp. 1255-1257.
  2. D. Shea et al., “10 Gbit/s PON with 100 km Reach and x1024 Split,” Proc. of ECOC, 2003, pp. 850-851.
  3. PIEMAN Project website, http://www.ist-pieman.org.
  4. N. Calabretta et al., “A Bidirectional WDM/TDM-PON Using DPSK Downstream Signals and a Narrowband AWG,” IEEE Photonics Tech. Lett., vol. 19, no. 16, 2007, pp. 1227-1229. https://doi.org/10.1109/LPT.2007.902168
  5. H.-H. Lu et al., “Bidirectional Hybrid DWDM-PON for HDTV/Gigabit Ethernet/CATV Applications,” ETRI J., vol. 29, no. 2, 2007, pp. 162-168. https://doi.org/10.4218/etrij.07.0106.0241