Results 31 to 40 of about 42,314 (301)
Optical Modulator Using Channel Optical Waveguides and Planar Patch-Antennas with Gaps
Jurnal Elektronika dan Telekomunikasi, 2016 Optical modulator using channel optical waveguides and planar patch-antennas with gaps on ferroelectric optical crystals were proposed. Basic operations for receiving a wireless microwave signal and directly converting it to a lightwave signal were ...
Yusuf Nur Wijayanto +2 more
doaj +1 more source
IET Optoelectronics, 2023 Optical digital‐to‐analog converters (DACs) are key to overcoming the enormous power consumption caused by the slowdown of Moore's Law. In previous work, an optical DAC consisting of a signal generator and an intensity converter was presented.
Yohei Aikawa, Hiroyuki Uenohara
doaj +1 more source
Exceeding the solar cell Shockley-Queisser limit via thermal up-conversion of low-energy photons [PDF]
, 2013 Maximum efficiency of ideal single-junction photovoltaic (PV) cells is limited to 33% (for one sun illumination) by intrinsic losses such as band edge thermalization, radiative recombination, and inability to absorb below-bandgap photons.
Boriskina, Svetlana V., Chen, Gang
core +2 more sources
67.5% Efficient InP-Based Laser Power Converters at 1470 nm at 77 K
PhotonicsRecent developments in long wavelength and cryogenic laser power converters have unlocked record performances in both areas. Here, devices for an optical input at ~1470 nm are studied for cryogenic applications, combining these cryogenic and long ...
Simon Fafard, Denis Masson
doaj +1 more source
Energies, 2023 Small-size concentrated solar power (CSP) plants are presently not diffused due to a too-high levelized cost of electricity (LCoE), contrarily to CSP plants with capacity >100 MW, which provide LCoE < 20 cEUR/kWh.
Alessandro Bellucci +3 more
doaj +1 more source
Gridless optical networking field trial: flexible spectrum switching, defragmentation and transport of 10G/40G/100G/555G over 620-km field fiber [PDF]
, 2011 We present results from the first gridless networking field trial with flexible spectrum switching nodes and 620 km of installed fibre links. Signals at 10G, 12.25G, 42.7G, DP-QPSK 40G, DP-QPSK 100G and 555G are generated, successfully transported and ...
Amaya, N +13 more
core +1 more source
Hardware for digitally controlled scanned probe microscopes [PDF]
, 1992 The design and implementation of a flexible and modular digital control and data acquisition system for scanned probe microscopes (SPMs) is presented. The measured performance of the system shows it to be capable of 14-bit data acquisition at a 100-kHz ...
Baldeschwieler, J. D. +4 more
core +1 more source
Silicon-organic hybrid electro-optical devices [PDF]
, 2013 Organic materials combined with strongly guiding silicon waveguides open the route to highly efficient electro-optical devices. Modulators based on the so-called silicon-organic hybrid (SOH) platform have only recently shown frequency responses up to 100
Alloatti, L +19 more
core +2 more sources
Low input power wavelength converter using gain-clamped semiconductor optical amplifier
Electronics Letters, 2002 A wavelength converter based on direct optical modulation of lasing light in a gain-clamped semiconductor optical amplifier (GC-SOA) is proposed. A low input power of −13.5 dBm, which is the lowest reported to the best of our knowledge, due to good coupling of input data power into the GC-SOA and high lasing threshold, and negative power penalty ...
Joon Tae Ahn +3 more
openaire +1 more source
Squeezing as an irreducible resource
, 1999 We show that squeezing is an irreducible resource which remains invariant under transformations by linear optical elements. In particular, we give a decomposition of any optical circuit with linear input-output relations into a linear multiport ...
P. Ring +2 more
core +1 more source