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 a thermo-optic switch comprising a 3.78μm-long coupled photonic crystal resonators coupled to a photonic crystal waveguide. The device has 6nm optical bandwidth, 20dB optical extinction ratio, 18.2mW switching power, and 14.8μsec rise time.
An analytical step-size selection rule is proposed for the simulation of polarization multiplexed signal propagation through the single mode optical fiber. The method leads to approximately constant one step simulation error and high computational efficiency.
We propose a novel unipolar encoding technique for orthogonal frequency-division multiplexing (OFDM) that increases the bandwidth efficiency by 33% and reduces computational complexity by 50% compared to conventional intensity modulation/direct detection (IM/DD) OFDM systems.
Temporal soliton formation in a Kerr-nonlinear optical micro-resonator leads to a coherent frequency comb covering the C and L-band. We demonstrate WDM transmission with 94 comb lines and an aggregate data rate of 20 Tbit/s.
A high-flux, soft x-ray light source, based on high harmonic generation, using 1.5-mJ, 10.1-fs IR pulses with CEP stabilization, has been constructed and used to resolve the 1s-π∗ and -σ∗ transitions in absorption spectra at the carbon K edge.
We present the first circularly-polarized soft X-ray harmonics to photon energies >160eV. Bright phase matched beams are used to characterize important materials with intrinsic perpendicular magnetic anisotropy for the first time using tabletop sources.
Picosecond optical pulses are characterized by directly photodetecting, with low resolution, 64 ancillary pulses with different chromatic dispersions generated in an all-fiber, high-sensitivity diagnostic, with application to the single-shot characterization of high-energy lasers.
A ∼1000 THz wide and 150 nJ/nm energy spectral-density supercontinuum, and a Raman comb wider than 300 THz are generated in atmospheric air-confined in inhibited coupling Kagome fibers for the first time.
We report first experimental demonstration of a warm atomic memory operating at a single-photon-level, capable to store and retrieve up to 120 spatial modes. We present unambiguous spatial g(2)(θS,θAS) cross-correlations between heralding and retrieved photons stored up to several microseconds.
We demonstrate time synchronization of two optical oscillators across a turbulent 4-km free-space link. The time offset between oscillators is below 4 fs at minute timescales with less than 50 fs wander over 40 hours.
Multiheterodyne frequency comb spectroscopy without mode-locked lasers is reported in the near-infrared C and L telecommunication bands. The system without active stabilization combines high signal-to-noise ratio, rapid tuning and moderate multiplex spectral span.
We experimentally demonstrate an all-optical flip-flop memory based on the bistability of tunable V-cavity laser with short storing and erasing response time of about 150ps and 159ps, respectively.
We demonstrate single atomic cladding layer of graphene enhance the photocurrent profile of the monolithic silicon p-i-n junction, by spatially- and spectrally- resolved photocurrent measurement.
We report a mid-infrared femtosecond OPO based on CdSiP2 tunable across 6786–7069 nm, generating record power of 110-mW at 7μm, with passive power and wavelength stability below 3% rms (1-hour) and 0.1% rms (15-min), respectively.
We demonstrate an on-chip thermal-tuned optical pulse shaper based on the four-path finite impose response (FIR). Four typical waveform are demonstrated by tuning the phase and amplitude of each path.
We present a high-performance InGaN/GaN heterojunction phototransistor with the responsivity (Rλ)> 8 (A/W) low norse-equrvalent-power (NEP) < 1.1×10−17 (W-Hz−0.5) and high detectivity(D∗)> 1.2×1014 (cm-Hz0.5-W−1).
We experimentally demonstrate the ability to couple any polarization state from a fiber to the TE-mode of a single waveguide in an integrated silicon photonics circuit. We achieved this by combining a 2D-grating coupler and two tunable Mach-Zehnder Interferometers (MZI) into a polarization adapter. We obtain less than ±0.6 dB standard deviation across all input polarization states at a wavelength...
For the first time, an integrated photonic phase-sensitive amplifier is reported. Approximately 6.3 dB extinction of on-chip phase-sensitive gain based on a signal-degenerate dual pump four-wave mixing architecture has been achieved.
We demonstrate InP nanopillar bipolar junction phototransistors monolithically integrated on a Silicon substrate. With a responsivity of 4 A/W and bandwidth of 7.5 GHz, these receivers indicate a route towards efficient on-chip optical interconnects.
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.