| 摘要 |
A method and apparatus for providing an efficient optical access network. In a preferred embodiment, a single light source is used to generate light in a network node, such as an OLT (optical line terminal). The generated light is then distributed using an optical splitter to a plurality of outputs, each associated with an ONU. The distributed light intended for a particular ONU (optical network unit) is modulated, for example by an EOM (electro-optical modulator), with a signal carrying communications for the intended ONU. The OLT includes a bank of EOMs or other kind of optical modulators, such as EAMs for serving a plurality of ONUs. The OLT may also include a second light source for generating light that is propagated to one or more of the ONUs for their use in forming upstream transmissions.
|
