光梳頻技術整合混合式光纖放大器於高密度分波多工傳輸系統之研究與設計

本論文提出雙臂驅動式馬赫倫德爾強度調變器(Dual Drive-Mach Zehnder Modulator；DD-MZM)搭配相移器(phase shift)、衰減器(attenuator) 、電放大器(Electrical Amplifier ; EA)以及振盪器(oscillator)組成光梳頻產生器(Optical Frequency Comb Generator；OFCG)來應用於高密度分波多工系統(Dense Wavelength Division Multiplexing；DWDM)，並利用極化控制器(Polarization Controller；PC)使雷射作極化正交，降低雷射光源間的功率疊加及串音(crosstalk)的影響。利用此光梳頻之技術能使一個雷射光源產生十九個通道，其通道間距為0.16-nm。在傳輸區段中，使用單模光纖(Single Mode Fiber；SMF)搭配色散補償光纖(Dispersion Compensation Fiber；DCF)，傳輸波長範圍包含C-頻帶(C-band)和L-頻帶(L-band)，並使用拉曼光纖放大器(Raman Fiber Amplifier；RFA)與摻鉺光纖放大器(Erbium Doped Fiber Amplifier；EDFA)組成作混合式光纖放大器(Hybrid Fiber Amplifier；HFA)作為線上放大器，補償傳輸光纖的損失並達到同時放大C-band和L-band頻譜的作用。本論文將在位元率為10-Gb/s下，對光梳頻產生架構與傳統單一雷射產生架構比較非歸零碼(Nonreturn to Zero；NRZ)、歸零碼(Return to Zero；RZ)和載波抑制歸零碼(Carrier Suppressed Return to Zero；CSRZ)三種調變格式之傳輸效能，證明本論文之光梳頻產生技術可大幅降低系統架構之成本與複雜度，同時利用C-頻帶和L-頻帶之頻譜，並且傳輸距離可達到900公里。

關鍵字

雙臂驅動式馬赫倫德爾強度調變器；光梳頻產生器；高密度分波多工系統；混合式光纖放大器

並列摘要

In the thesis, we propose Optical Frequency Comb Generation (OFCG) which consists of a Dual-drive Mach-Zehnder Modulator (DD-MZM), phase shift, attenuator, Electrical Amplifier (EA), and an oscillator. The proposed OFCG can be applied to Dense Wavelength Division Multiplexing (DWDM). In order to decrease the effect of power superposition and crosstalk between laser sources, we use Polarization Controller (PC) to make lasers to be orthogonal polarization. The OFCG technology enables a laser to produce 19 channels, and the space among channels is 0.16-nm. In the transmission span, the transmission structure consists of Single Mode Fiber (SMF) and Dispersion Compensation Fiber (DCF), and the transmission wavelength includes C-band and L-band. Then, we use Hybrid Fiber Amplifier (HFA) which consists of a Raman Fiber Amplifier (RFA) and an Erbium Doped Fiber Amplifier (EDFA) as a power amplifier to compensate fiber attenuation and amplify spectra of C-band and L-band, simultaneously. The experimental simulation compares the transmission performance between OFCG technology and conventional single laser generation technology in three kinds of modulation formats which include Nonreturn to Zero (NRZ), Return to Zero (RZ) and Carrier Suppressed Return to Zero (CSRZ) at the 10-Gb/s data rate. Then we demonstrate the OFCG technology can decrease the cost and complexity of the system architecture and increase the transmission distance up to 900-km.

並列關鍵字

DD-MZM ； OFCG ； DWDM ； HFA

參考文獻

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光梳頻技術整合混合式光纖放大器於高密度分波多工傳輸系統之研究與設計

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