The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We demonstrate frequency conversion of single-photon-level signals with an efficiency of 25% and signal-to-noise level >20:1, via four-wave-mixing Bragg scattering in a Si3N4 microring using low power (<20 mW per pump), continuous wave pump lasers.
We demonstrate frequency conversion via four-wave-mixing Bragg scattering in Si3N4 microrings. The intra-chip conversion efficiency in 40-μm-radius microrings is −17 dB, a >40 dB increased compared to 1.2-cm-long Si3N4 waveguides under equal pumping conditions.
We propose a new material platform using vertical integration of silicon nitride on silicon-on-insulator for optimizing device performances in silicon photonics. Preliminary results including silicon nitride growth, high-Q resonator fabrication, and vertical integration are presented.
We demonstrate a compact on-chip fluorescence sensor using small silicon nitride microdisk resonators, designed to enhance the pump, collect fluorescence emission, and suppress the pump at the collection port with 53dB extinction.
Piezoelectric structures achieve structural control by using electromechanical coupling characteristics, therefore, their design and analysis involve interaction between mechanical system and circuit system inevitably. Based on the analogy between governing equations of mechanical system and circuit system, equivalent relation is established in the paper. Using the analogy relations, the piezoelectric...
Over-coupled microdisk resonators with high intrinsic Qs are proposed as compact and low insertion-loss delay lines for narrowband optical filters. Design principles and preliminary experimental results are presented.
Resonator-based filters using oxide-clad silicon microdisks scaled to ultimate miniaturization (radius~1.5-2 mum) close to radiation limit are demonstrated. High-Q (~1.5times105) and single-mode operation in each microdisk enables low insertion-loss and large free-spectral-range filters.
A traveling-wave resonator structure with interferometric-coupling scheme is shown to have the capability of supporting both over-coupled and critically-coupled modes, simultaneously. This device is demonstrated in SOI with an integrated microheater to tune its coupling. The application of this device for nonlinear optics is discussed.
A compact coupled-resonators flat-band filter with a large bandwidth (~3.3 nm), large free-spectral range (~18 nm), low crosstalk (Lt-12 dB) and negligible insertion loss (Lt0.3 dB) is demonstrated on a silicon-on-insulator platform with focused applications for on-chip optical interconnects.
We propose and implement a traveling-wave resonator with an interferometric coupling scheme for efficient high-bandwidth nonlinear silicon photonics. By thermal tuning of the interferometer, selective critical coupling for the pump wavelength is achieved.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.