Achieving non-reciprocal optical behavior in integrated photonics with high efficiency has long been a challenge.Here,we demonstrate a non-reciprocal magneto-optic response by integrating multilayer 2D CuCrP_(2)S_(6)(...Achieving non-reciprocal optical behavior in integrated photonics with high efficiency has long been a challenge.Here,we demonstrate a non-reciprocal magneto-optic response by integrating multilayer 2D CuCrP_(2)S_(6)(CCPS)onto silicon microring resonators(MRRs).Under an applied magnetic field,the CCPS intralayer ferromagnetic ordering,characterized by easy-plane magneto-crystalline anisotropy,induces asymmetrical modal responses in the clockwise(CW)and counterclockwise(CCW)light propagation directions.The proposed configuration achieves a low insertion loss ranging from 0.15 dB to 1.8 dB and a high isolation ratio of 28 dB at 1550 nm.Notably,it exhibits a significant resonance wavelength splitting of 0.4 nm between the counter propagation directions,supporting a 50 GHz optical bandwidth.Operating directly in the transverse electric(TE)mode,it aligns with the main polarization used in silicon photonics circuits,eliminating the need for additional polarization management.The device is ultra-compact,with a 2D flake interaction length ranging from 22μm to 55μm and a thickness between 39 nm and 62 nm.Its operation range covers the entire C-band with a bandwidth of up to 100 nm.These attributes make our hybrid CCPS/Si device ideal for advanced non-reciprocal optical applications in the short-wave infrared(SWIR)spectrum,crucial for enhancing the resilience of optical systems against back-reflections.展开更多
文摘Achieving non-reciprocal optical behavior in integrated photonics with high efficiency has long been a challenge.Here,we demonstrate a non-reciprocal magneto-optic response by integrating multilayer 2D CuCrP_(2)S_(6)(CCPS)onto silicon microring resonators(MRRs).Under an applied magnetic field,the CCPS intralayer ferromagnetic ordering,characterized by easy-plane magneto-crystalline anisotropy,induces asymmetrical modal responses in the clockwise(CW)and counterclockwise(CCW)light propagation directions.The proposed configuration achieves a low insertion loss ranging from 0.15 dB to 1.8 dB and a high isolation ratio of 28 dB at 1550 nm.Notably,it exhibits a significant resonance wavelength splitting of 0.4 nm between the counter propagation directions,supporting a 50 GHz optical bandwidth.Operating directly in the transverse electric(TE)mode,it aligns with the main polarization used in silicon photonics circuits,eliminating the need for additional polarization management.The device is ultra-compact,with a 2D flake interaction length ranging from 22μm to 55μm and a thickness between 39 nm and 62 nm.Its operation range covers the entire C-band with a bandwidth of up to 100 nm.These attributes make our hybrid CCPS/Si device ideal for advanced non-reciprocal optical applications in the short-wave infrared(SWIR)spectrum,crucial for enhancing the resilience of optical systems against back-reflections.
