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An open line system (OLS) is a traditional optical line system used in telecoms that frees users from vendor lock-ins and allows for the configuration of a network that uses best-in-class parts from a variety of different manufacturers and vendors.
A truly open line system (OLS) is capable of transporting wavelengths from multiple vendors. Additionally, an OLS can be easily integrated into software-defined environments through open, standards-based application programming interfaces (APIs).
The basic optical fiber consists of two concentric layers—the inner core and the outer cladding, which has a refractive index lower than the core.
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