Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Leo T. Varghese"'
Autor:
Ben Niu, Leo T. Varghese, Daniel E. Leaird, Andrew M. Weiner, Fuwan Gan, Minghao Qi, Jian Wang, Li Fan, Yi Xuan, Xi Wang, Justin C. Wirth
Publikováno v:
IEEE Photonics Conference : [proceedings]. IEEE Photonics Conference.
An optical diode transmits forward 10Gbps data with less than 0.5dB power penalty, while suppressing and distorting backward data with a 11dB nominal power penalty. The nonreciprocal transmission is also demonstrated with a silicon modulator.
Publikováno v:
Advanced Optical Materials. 1:740-746
Hollow-core (HC) optical microcavities differ from conventional ones in that they can strongly confine light in air. HC cavities simultaneously possessing high air–energy ratios (αair), high quality factors (Q), and small mode volumes (Veff) may e
Publikováno v:
Advanced Optical Materials. 1:692-698
Publikováno v:
Small. 9:4237-4242
A layer-by-layer (LBL) method can generate or approximate any three-dimensional (3D) structure, and has been the approach for the manufacturing of complementary metal-oxide-semiconductor (CMOS) devices. However, its high cost precludes the fabricatio
Publikováno v:
Small. 9:3778-3783
Metal nanostructures are the main building blocks of metamaterials and plasmonics which show many extraordinary properties not existing in nature. A simple and widely applicable method that can directly pattern metals with silicon molds without the n
Publikováno v:
Journal of Lightwave Technology. 31:313-321
The optical diode effect, which is useful for on-chip optical information processing, has been recently demonstrated in cascaded nonlinear silicon microrings. In this paper, a semianalytical model for the diode is described in details, which extends
Autor:
Yi Xuan, Kyunghun Han, Min Teng, Leo T. Varghese, Pei-Hsun Wang, Daniel E. Leaird, Andrew J. Metcalf, Andrew M. Weiner, Jose A. Jramillo-VilleGas, Ben Niu, Xiaoxiao Xue, Li Fan, Yang Liu, Sangsik Kim, Jian Wang, Minghao Qi
Publikováno v:
Conference on Lasers and Electro-Optics.
We report the fabrication and characterization of SiN resonators with intrinsic Qs up to 17 million verified with cavity ring-down measurement. Frequency comb generation threshold down to 2.36 mW is consistent with theoretical estimation.
Publikováno v:
Birck and NCN Publications
A Passive Optical Diode Electrical diodes are at the core of microelectronics. The optical equivalent, however, has been difficult to realize owing to the time-reversal symmetry of Maxwell's equations that describe electromagnetic propagation. Usuall
Publikováno v:
2015 IEEE Photonics Conference (IPC).
An add-drop filter with asymmetric coupling to bus waveguides, cascaded with a notch filter, enables non-reciprocal data transmission through direction dependent resonance shift. Strong dispersion and attenuation near resonance allows one-way 10 Gbps
Autor:
Hao Shen, Jian Wang, Daniel E. Leaird, Andrew M. Weiner, Ben Niu, Yi Xuan, Xi Wang, Fuwan Gan, Leo T. Varghese, Rui Wu, Li Fan, Minghao Qi
Publikováno v:
Nature Communications
Photonic methods of radio-frequency waveform generation and processing can provide performance advantages and flexibility over electronic methods due to the ultrawide bandwidth offered by the optical carriers. However, bulk optics implementations suf