光通訊系統和多通道光傳輸與接收方法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

106114298

專利證號

I 640173

專利獲證名稱

光通訊系統和多通道光傳輸與接收方法

專利所屬機關 (申請機關)

國立臺灣科技大學

獲證日期

2018/11/01

技術說明

目前的100Gb/s Ethernet在1310nm波段已發展出CLR4規格，將原利用LAN-WDM(通道波長間距為400GHz)的波長標準改為使用CWDM波長。優點為其所用的光發射機光源可採用不需控溫的半導體雷射光源，可大幅降低光電元件及其控制與驅動電路的成本；但其缺點為，因通道波長間距較大，因此在可用的光通訊波長範圍內能使用的通道數較少，因此在將總資料速率提升至400Gb/s時，若使用8個以上波長，將難以將所有波長通道塞在1310nm的波長附近(光纖色散值較低)。我們提出創新的方法，在每個CWDM通道同時傳送數個波長間距較小的通道(稱為次波長通道)，仍維持CWDM通道光源無需控溫的優點但可達到大幅提升波長通道數的目標。 The current 100Gb/s Ethernet operating in the 1310nm wavelength band has developed the CLR4 specification, which changes the standard of LAN-WDM wavelengths (wavelength channel spacing of 400GHz) to the standard of CWDM wavelengths (20nm channel spacing). The optical transmitter light sources have the advantages of operation can without temperature control. This reduces the cost greatly by simplifying the photonic elements and the control circuits. However, the disadvantage is the limitation in useable wavelength channels. When the total data rates are up to 400Gb/s and above 8 channels are to be used in the system, the wavelength channels are hard to accommodate around 1310nm (The value of the dispersion is low). A new method is proposed, in which the CWDM can transmit several channels with narrow spacing at the same time (subwavelength), and the light sources without temperature control can be achieved by using large wavelength channel spacing.

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