Probably not, as Fibre works very differently to DSL. But you may, in some cases, be able to use your existing Wi-Fi-enabled router to spread your Fibre connection via Wi-Fi. This will depend on which router you have and how the provider installed your Fibre line.
How is Fibre different from DSL?
DSL is dependent on Telkom copper wire infrastructure, which is often unreliable and can be slow if you have a bad line or are far away from your local exchange, whereas Fibre transmits data with pulses of light over a Fibre optical cable.
These cables are far more reliable than copper wires and can offer far greater connectivity speeds.