光梳頻產生器搭配無色光源技術整合混合式光纖放大器於雙向傳輸之分波多工被動式光網路的研究與設計

Study and Design of Bidirectional WDM-PON based on Optical Frequency Comb Generator and Colorless Technology Integrated with Hybrid Fiber Amplifier

陳庭漢(Ting-Han Chen)

指導教授 ： 賴柏洲 ； 孫卓勳

國立臺北科技大學/機電學院/電腦與通訊研究所/碩士(2013年)

摘要

本論文提出雙臂驅動式馬赫倫德爾強度調變器(Dual Drive-MachZehnder 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)組成之光梳頻產生器(Optical Frequency Comb Generator；OFCG)，應用於雙向傳輸系統之分波多工被動式光網路(Wavelength Division Multiplexing Passive Optical Network；WDM-PON)，利用光梳頻產生器產生76個載波作為傳輸通道，傳輸波長範圍包含C-頻帶(C-band)和L-頻帶(L-band)，其通道間距為0.16nm(20 GHz)，並使用兩種混合式光纖放大器(Hybrid Fiber Amplifier;HFA)作為線上放大器，補償傳輸光纖的損失並同時放大C-band和L-band頻譜的作用，將偶數波長通道(even channel)運用於下行傳輸，傳輸速率設定為10 Gbit/s；上行使用奇數波長通道(odd channel)，傳輸速率設定為5 Gbit/s，並且在光網路單元(Optical Network Unit；ONU)端使用無色光源(colorless)技術降低系統成本。本論文提出後向混合式傳輸系統可將主動元件全部配置於光線路終端(Local Exchange；LE)，降低系統之維修成本。同時上、下行使用不同波長，不僅可減少背向雷利散射(Rayleigh backscattering)，也可以將被動式光網路的總傳輸距離達到105 km。

關鍵字

光梳頻產生器 ； C-頻帶 ； L-頻帶 ； 混合式光纖放大器 ； 無色光源

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 bidirection Long-Reach Wavelength Division Multiplexing Passive Optical Network. Utilizes OFCG to generate 76 carriers as transmission channels, and the space among channels is 0.16 nm, includes C-band and L-band. We use Hybrid Fiber Amplifier (HFA) as a power amplifier to compensate fiber attenuation and amplify spectra of C-band and L-band, simultaneously. The even channels are chosen as the downstream channels with 10Gbit/s bit rate. In addition, the odd channels which are chosen as the upstream channels with 5 Gbit/s bit rate, and which use colorless techniqueare implementedin each Optical Network Unit (ONU) in order to reduce the cost. This thesis proposes Raman(B)-EDFA system can set all active conponents at the Local Exchange (LE). To summarize, using OFCG and colorless technique in remote pumping system can reduce the cost effectively. The results show that use odd and even channels as upstream and downstream channels respectively not only avoids Rayleigh backscattering effect to bidirection WDM-PON, but also raises the transmission distance of PON to 105 km and achieves the Long-Reach PON.

並列關鍵字

OFCG ； C-band ； L-band ； HFA ； colorless

參考文獻

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