Electronic dispersion compensation for low-cost optical fiber link = 저비용 광섬유 링크를 위한 전자 분산 보상기

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Low-cost distributed feedback (DFB) directly modulated laser (DML) is attractive solution for short-reach optical transmission such as long term evolution (LTE) backhaul and passive optical network (PON). However, direct modulation induces frequency chirp in data rate over 3Gb/s which causes chirp-dispersion under dispersive channel. The conventional electronic dispersion compensation (EDC) can’t compensate the chirp-dispersion because of the nonlinear characteristics. In this paper, the interaction between the frequency chirp and fiber dispersion is analyzed and EDC with non-linear equalization technique is proposed for chirp-dispersion compensation. There are also linear equalization techniques. Low-cost DFB-DML is designed by the conventional parameters and simulated for 6Gb/s LTE backhaul with 40km standard single mode fiber (SSMF) at 1550nm. The simulated result shows that the proposed EDC successfully compensates the chirp-dispersion. The proposed EDC is fabricated by 90nm CMOS process and the full chip consumes 62mW power consumption at 6Gb/s data. Fabry-Perot laser (FPL) can be a more cost-effective solution than DFB-DML because of its simple man-ufacturing process. However, mode partition noise (MPN) due to the multiple modes of FPL causes intersym-bol interference. In this paper, MPN is analyzed and the EDC technique for the MPN compensation is sug-gested for 10Gb/s PON upstream with 20km SSMF at 1270nm. The simulated result shows that the EDC can reduce the mode partition noise penalty.
Advisors
Bae, Hyeon-Minresearcher배현민researcher
Description
한국과학기술원 :전기및전자공학과,
Publisher
한국과학기술원
Issue Date
2013
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학과, 2013.8 ,[vi, 47 p. :]

Keywords

Chirp; Directly modulated laser; EDC; Fabry-Perot laser; Mode partition noise; 모드 분배 잡음; 섬유 분산; 전자 분산 보상기; 직접 구동 방식 분포 궤환형 레이저; 패브리 페로 레이져

URI
http://hdl.handle.net/10203/221737
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=657347&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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