| 摘要 |
A Passive Optical Network (PON) is provided with capability for multiple protocols and service suppliers by employing Wavelength Division Multiplexer (WDM) elements in combination with optical couplers at optical distribution nodes (ODN) intermediate a local exchange office and a customer node. The local exchange office node transmitting and receiving signals from a single optical fiber through a WDM providing M/2 wavelength pairs for use with differing protocols and each customer node connected to one leg of an optical coupler in the ODN with a WDM associated with one of the wavelength pairs for received and transmitted signals.
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