| 摘要 |
A self-healing ring-based passive optical network (PON) including an optical fiber ring, an optical line termination (OLT), and a plurality of optical network units (ONUs) is provided. The optical fiber ring has a first end and a second end. The OLT is coupled to the first and the second end. The OLT receives a first signal from the first end or the first and the second end and transmits a second signal to the first end or the first and the second end. Each of the ONUs has a third end and a fourth end both coupled to the optical fiber ring. Each of the ONUs receives the second signal from the third and the fourth end and transmits the first signal to the third and the fourth end. The ONUs connect to the OLT through the optical fiber ring so as to form a ring-based PON.
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