WDM-PON Systems Based on ASE Sources and Remotely Pumped EDFAs
碩士 === 國立臺灣科技大學 === 電子工程系 === 101 === We have proposed and experimentally demonstrated a novel remotely pumped WDM-PON architecture to provide 10/1.25-Gb/s bidirectional transmission with potential low-cost configuration. In this scheme, we use amplified spontaneous emission (ASE) light source with...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/36153747179354482137 |
| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程系 === 101 === We have proposed and experimentally demonstrated a novel remotely pumped WDM-PON architecture to provide 10/1.25-Gb/s bidirectional transmission with potential low-cost configuration. In this scheme, we use amplified spontaneous emission (ASE) light source with broad optical spectrum for upstream transmission. The ASE light source spectrum is sliced by the arrayed waveguide grating (AWG) at the remote node (RN). A reflected electro-absorption modulator (REAM) is used to encode the upstream signals and achieve colorless operation. For downstream transmission a laser diode is used as the upstream light source. In order to achieve 10 Gb/s transmission data rate, we use external Mach-Zehnder modulator to carry the downstream data.
The remotely pumping scheme can compensate the double-pass optical loss and enhance the signal to noise ratio. The remotely pumped architecture may give nonuniform gain for different wavelength channels. In order to provide fair performance to all the channels, a slanted gain flattening filter (GFF) was added to improve the power nonuniformity for the upstream signals.
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