All-optical wavelength conversion is a key technology for resolving wavelength contention challenges in routing and switching in a format-and transmission-rate-transparent fashion.Silicon-on-insulator devices,with the...All-optical wavelength conversion is a key technology for resolving wavelength contention challenges in routing and switching in a format-and transmission-rate-transparent fashion.Silicon-on-insulator devices,with their high optical confinement and large Kerr coefficient,hold promise for the on-chip integration of efficient wavelength converters.However,integrated wavelength converters based on four-wave mixing still face challenges,such as the inefficiency of the process,which is exacerbated by the need for off-chip filtering.Such filtering is essential to suppress the residual pump(s)and signal,ensuring the output spectrum predominantly contains the newly generated idler.While on-chip filtering has already been demonstrated,aspects such as idler continuous tunability and system performance when operating with high-symbol-rate signals remain unexplored.We present a silicon photonic wavelength converter with an integrated filter that achieves widely tunable filtering over 25 nm,with a pump and modulated signal suppression ratio exceeding 52 dB.The operation of the device with telecommunication signals is demonstrated across the C-band.展开更多
基金UK’s EPSRC through projects JUNIPERS (EP/T007303/1) and HASC (EP/X040569/1)Strategic Equipment Award (EP/X030040/1)Royal Society (EP/T019697/1, CORNERSTONE 2, EP/W035995/1,CORNERSTONE 2.5)
文摘All-optical wavelength conversion is a key technology for resolving wavelength contention challenges in routing and switching in a format-and transmission-rate-transparent fashion.Silicon-on-insulator devices,with their high optical confinement and large Kerr coefficient,hold promise for the on-chip integration of efficient wavelength converters.However,integrated wavelength converters based on four-wave mixing still face challenges,such as the inefficiency of the process,which is exacerbated by the need for off-chip filtering.Such filtering is essential to suppress the residual pump(s)and signal,ensuring the output spectrum predominantly contains the newly generated idler.While on-chip filtering has already been demonstrated,aspects such as idler continuous tunability and system performance when operating with high-symbol-rate signals remain unexplored.We present a silicon photonic wavelength converter with an integrated filter that achieves widely tunable filtering over 25 nm,with a pump and modulated signal suppression ratio exceeding 52 dB.The operation of the device with telecommunication signals is demonstrated across the C-band.
