Small and Low-Cost Dual-Rate Optical Triplexer for OLT Transceivers in 10G/1G Co-existing 10G-EPON Systems

Atsushi KANDA, Akira OHKI, Takeshi KUROSAKI, Hiroaki SANJOH, Kota ASAKA, Ryoko YOSHIMURA, Toshio ITO, Makoto NAKAMURA, Masafumi NOGAWA, Yusuke OHTOMO, Mikio YONEYAMA

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Summary :

The 10-gigabit Ethernet passive optical network (10G-EPON) is a promising candidate for the next generation of fiber-to-the-home access systems. In the symmetric 10G-EPON system, the gigabit Ethernet passive optical network (GE-PON) and 10G-EPON will have to co-exist on the same optical network. For this purpose, an optical triplexer (10G-transmitter, 1G-transmitter, and 10G/1G-receiver) for optical line terminal (OLT) transceivers in 10G/1G co-existing EPON systems has been developed. Reducing the size and cost of the optical triplexer has been one of the largest issues in the effort to deploy 10G-EPON systems for practical use. In this paper, we describe a novel small and low-cost dual-rate optical triplexer for use in 10G-EPON applications. By reducing the optical path length by means of a light collection system with a low-magnification long-focus coupling lens, we have successfully miniaturized the optical triplexer for use in 10G-EPON OLT 10-gigabit small form factor pluggable (XFP) transceivers and decreased the number of lenses. A low-cost design of sub-assemblies also contributes to cost reduction. The triplexer's performance complies with IEEE 802.3av specifications.

Publication
IEICE TRANSACTIONS on Electronics Vol.E96-C No.7 pp.996-1002
Publication Date
2013/07/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E96.C.996
Type of Manuscript
Special Section PAPER (Special Section on Recent Advances in Integrated Photonic Devices)
Category

Authors

Atsushi KANDA
  NTT Corporation
Akira OHKI
  NTT Corporation
Takeshi KUROSAKI
  NTT Corporation
Hiroaki SANJOH
  NTT Corporation
Kota ASAKA
  NTT Corporation
Ryoko YOSHIMURA
  NTT Corporation
Toshio ITO
  NTT Corporation
Makoto NAKAMURA
  NTT Corporation
Masafumi NOGAWA
  NTT Corporation
Yusuke OHTOMO
  NTT Corporation
Mikio YONEYAMA
  NTT Corporation

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