发明名称 |
Optical PON network using passive DPSK demodulation |
摘要 |
An optical PON network comprises a central office which generates N DPSK modulated optical signals, where N is an integer greater than 1, an optical coupling which connects the N signals to at least one optical fiber, a passive distribution node located remotely from the central office which has at least one input port that is coupled to the fiber and a plurality of output ports, the node being arranged to transmit a first wavelength of the N signals to at least one of its output ports, and at least one optical network unit connected through a respective optical fiber to the first output port of the passive distribution node. The passive distribution node comprises an arrayed waveguide grating which provides a passive optical connection between its input port and the first output port and which for that connection functions as a bandpass filter having a profile and bandwidth selected such that the DPSK optical signal passed to the input node is converted to an intensity modulated signal at the output port.
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申请公布号 |
US8478125(B2) |
申请公布日期 |
2013.07.02 |
申请号 |
US20080600606 |
申请日期 |
2008.04.24 |
申请人 |
CALABRETTA NICOLA;PRESI MARCO;CONTESTABILE GIAMPIERO;GHIGGINO PIERPAOLO;CIARAMELLA ERNESTO;CAVALIERE FABIO;PROIETTI ROBERTO;TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
CALABRETTA NICOLA;PRESI MARCO;CONTESTABILE GIAMPIERO;GHIGGINO PIERPAOLO;CIARAMELLA ERNESTO;CAVALIERE FABIO;PROIETTI ROBERTO |
分类号 |
H04J14/00;H04B10/67;H04J14/02 |
主分类号 |
H04J14/00 |
代理机构 |
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代理人 |
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地址 |
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