Presentation	2011-08-26 Investigation of Modal Dispersion Compensation Using Digital Coherent Receiver in Multi-mode Fiber Transmission Takayoshi MORI, Taiji SAKAMOTO, Takashi YAMAMOTO, Shigeru TOMITA,
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Abstract(in English)	Internet traffic is increasing rapidly, and considerable attention has been paid to the construction of high-speed networks. To realize a much higher transmission capacity, we need to avoid the nonlinear effects in optical fiber and the optical fiber fuse phenomenon. Enlarging the effective area (A_) of optical fibers is a practical way of reducing nonlinearity and increasing the fiber fuse threshold power. However, enlarging the A_ makes it difficult to keep the single mode operation of the fiber at the signal wavelength. With multi-mode operation, mode dispersion causes serious signal degradation as a result of inter-symbol interference (ISI). Even if we can eliminate the higher-order mode by using a mode filter, multipath interference (MPI), which is caused by repeated mode conversion between fundamental and higher-order modes, cannot be removed with an optical method. If we can compensate for such signal degradation by mode dispersion, we can realize a much larger A_ and expect to achieve a much higher transmission capacity. Here, we demonstrate the transmission of graded-index multi-mode fiber (GI-MMF) with MPI compensation using digital coherent technology.
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Keyword(in English)	Multi-Mode Fiber / Mode dispersion compensation / Digital Coherent Receiver
Paper #	OCS2011-49
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Conference Information
Committee	OCS
Conference Date	2011/8/18(1days)
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Registration To	Optical Communication Systems (OCS)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Investigation of Modal Dispersion Compensation Using Digital Coherent Receiver in Multi-mode Fiber Transmission
Sub Title (in English)
Keyword(1)	Multi-Mode Fiber
Keyword(2)	Mode dispersion compensation
Keyword(3)	Digital Coherent Receiver
1st Author's Name	Takayoshi MORI
1st Author's Affiliation	NTT Access Network Service Systems Laboratories, NTT Corporation()
2nd Author's Name	Taiji SAKAMOTO
2nd Author's Affiliation	NTT Access Network Service Systems Laboratories, NTT Corporation
3rd Author's Name	Takashi YAMAMOTO
3rd Author's Affiliation	NTT Access Network Service Systems Laboratories, NTT Corporation
4th Author's Name	Shigeru TOMITA
4th Author's Affiliation	NTT Access Network Service Systems Laboratories, NTT Corporation
Date	2011-08-26
Paper #	OCS2011-49
Volume (vol)	vol.111
Number (no)	181
Page	pp.pp.-
#Pages	6
Date of Issue