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Optical filter cascading effects in a phase modulated coherent optical OFDM transmission system based on Hartley transform

機(jī)譯:基于Hartley變換的相位調(diào)制相干光OFDm傳輸系統(tǒng)中的濾光器級(jí)聯(lián)效應(yīng)

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摘要

Effects of cascading optical filters are investigated for a phase modulated coherent optical OFDM system based\udon Hartley transform. The evaluation is performed by means of numeric simulations in a 10 Gb/s system with\uda total bandwidth of 10 GHz. First a back-to-back (no fiber) case is assessed. Results show a 3 dB power penalty\udafter a single filter of only 68% of the signal bandwidth. The same penalty is achieved when cascading 10 filters\udof 21.6 GHz bandwidth. Additionally, the penalties associated to the introduction of fiber spans between filters\udare investigated.
機(jī)譯:針對(duì)基于\ udon Hartley變換的相位調(diào)制相干光學(xué)OFDM系統(tǒng),研究了級(jí)聯(lián)光學(xué)濾波器的影響。評(píng)估是通過(guò)在總帶寬為10 GHz的10 Gb / s系統(tǒng)中進(jìn)行數(shù)值模擬來(lái)進(jìn)行的。首先評(píng)估背對(duì)背(無(wú)光纖)的情況。結(jié)果顯示,僅單個(gè)濾波器僅占信號(hào)帶寬的68%之后,功率損失為3 dB。當(dāng)級(jí)聯(lián)10個(gè)濾波器\ udof 21.6 GHz帶寬時(shí),將獲得相同的代價(jià)。此外,還研究了與在過(guò)濾器之間引入光纖跨度有關(guān)的罰款。

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