Presentation 2016-03-07
Power Saving-oriented Data Center Optical Network Architecture Using PLZT Optical Switch
Masayuki Hirono, Yoshihiro Isaji, Yusuke Nakajima, Takehiro Sato, Satoru Okamoto, Hidetoshi Takeshita, Naoaki Yamanaka,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In recent years, due to the increase of Internet services and the spread of smartphones, the number and scale of data centers are increasing. With the growth of the traffic amount between data centers, increase in power consumption has become a major problem. The Optical communication technology achieves lower power consumption than the electrical communication and is attracting attention as a method of configuring a energy-efficient data center network. An architecture that introduces an optical circuit that directly connects Top-of-Rack switches and realizes optical circuit switching communication in a data center network is being studied. However, since switching speed of a MEMS (Micro Electro Mechanical Systems) utilized for the optical switch is slow, this conventional architecture cannot deal with the flow group that requests change of optical path route frequently. In this paper, to target the data center architecture using the directly-connected optical circuit, we proposed a data center architecture that introduces PLZT (Plomb Lanthanum Zirconate Titanate) optical switches that change the optical path route in nanoseconds. In addition, to realize the optical circuit switching communication that uses PLZT optical switches, bandwidth allocation using TDM (Time Division Multiplexing) is proposed. Simulation results show that the proposed architecture achieves higher utilization of optical circuit and 45% reduction in maximum power consumption ratio as compared with the Helios conventional techniques.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) datacenter network / network architecture / optical circuit switching / PLZT optical switch / path setting / time division multiplexing
Paper # PN2015-109
Date of Issue 2016-02-29 (PN)

Conference Information
Committee PN
Conference Date 2016/3/7(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Okinawaken Seinenkaikan
Topics (in Japanese) (See Japanese page)
Topics (in English) Photonic network technologies, etc.
Chair Eiji Oki(Univ. of Electro-Comm.)
Vice Chair Hiroshi Hasegawa(Nagoya Univ.) / Takehiro Tsuritani(KDDI Labs.) / Haruki Ogoshi(Furukawa Electric)
Secretary Hiroshi Hasegawa(NICT) / Takehiro Tsuritani(Osaka Univ.) / Haruki Ogoshi
Assistant Masahiro Nakagawa(NTT)

Paper Information
Registration To Technical Committee on Photonic Network
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Power Saving-oriented Data Center Optical Network Architecture Using PLZT Optical Switch
Sub Title (in English)
Keyword(1) datacenter network
Keyword(2) network architecture
Keyword(3) optical circuit switching
Keyword(4) PLZT optical switch
Keyword(5) path setting
Keyword(6) time division multiplexing
1st Author's Name Masayuki Hirono
1st Author's Affiliation Keio University(Keio Univ.)
2nd Author's Name Yoshihiro Isaji
2nd Author's Affiliation Keio University(Keio Univ.)
3rd Author's Name Yusuke Nakajima
3rd Author's Affiliation Keio University(Keio Univ.)
4th Author's Name Takehiro Sato
4th Author's Affiliation Keio University(Keio Univ.)
5th Author's Name Satoru Okamoto
5th Author's Affiliation Keio University(Keio Univ.)
6th Author's Name Hidetoshi Takeshita
6th Author's Affiliation Keio University(Keio Univ.)
7th Author's Name Naoaki Yamanaka
7th Author's Affiliation Keio University(Keio Univ.)
Date 2016-03-07
Paper # PN2015-109
Volume (vol) vol.115
Number (no) PN-497
Page pp.pp.33-38(PN),
#Pages 6
Date of Issue 2016-02-29 (PN)