Presentation	2011-07-12 Recent Progress of Pre-equalization Technology for High-speed Optical Communication Takashi SUGIHARA,
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Abstract(in English)	Pre-equalization technology as the next-generation transmitter architecture is reviewed. The required characteristics to the optical devices with pre-equalization are clarified. The signal quality degrades by finite extinction ratio of an optical modulator, because pre-equalized complex electric fields localize around the center of the constellation. For the application of pre-equalization technology to higher speed transmission systems with higher order modulation formats, it is important to enhance the sampling rate of a digital-to-analog converter (DAC) with finer bit resolution. We show the key architecture of the DAC to improve the performance for high-speed operation.
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Keyword(in English)	Digital Signal Processing / Pre-equalization / I/Q Modulator / Bias Control
Paper #	OCS2011-41
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Conference Information
Committee	OCS
Conference Date	2011/7/4(1days)
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Paper Information
Registration To	Optical Communication Systems (OCS)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Recent Progress of Pre-equalization Technology for High-speed Optical Communication
Sub Title (in English)
Keyword(1)	Digital Signal Processing
Keyword(2)	Pre-equalization
Keyword(3)	I/Q Modulator
Keyword(4)	Bias Control
1st Author's Name	Takashi SUGIHARA
1st Author's Affiliation	Information Technology R&D Center, Mitsubishi Electric Corporation()
Date	2011-07-12
Paper #	OCS2011-41
Volume (vol)	vol.111
Number (no)	122
Page	pp.pp.-
#Pages	6
Date of Issue