70 research outputs found
Ultrafast all-optical wavelength conversion in silicon waveguides using femtosecond pump-probe pulses
Experimental results on ultrafast all-optical wavelength conversion in silicon-on-insulator waveguides are presented. Red and blue shifts of 10nm have been observed in femtosecond pump-probe experiments. Alloptical switching and the importance of waveguide dispersion are discussed
Π‘ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ΅ ΡΠΎΡΡΠΎΡΠ½ΠΈΠ΅ ΠΈ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Ρ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΠΠΠ’ Π’ΠΎΠΌΡΠΊΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ
Π ΡΠ°Π±ΠΎΡΠ΅ Π΄Π°Π½Π° Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ° ΡΠ΅ΡΠΈ ΠΎΡΠΎΠ±ΠΎ ΠΎΡ
ΡΠ°Π½ΡΠ΅ΠΌΡΡ
ΠΏΡΠΈΡΠΎΠ΄Π½ΡΡ
ΡΠ΅ΡΡΠΈΡΠΎΡΠΈΠΉ Π’ΠΎΠΌΡΠΊΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ, Π΅Π΅ ΡΠΎΠ»ΠΈ Π² ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠ°Π½ΠΈΠΈ ΡΠΊΠΎΠ»ΠΎΠ³ΠΎ-Ρ
ΠΎΠ·ΡΠΉΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Π±Π°Π»Π°Π½ΡΠ° ΠΎΠ±Π»Π°ΡΡΠΈ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΡΠ°ΠΏΡ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ΅ΡΠΈ ΠΠΠΠ’. ΠΠ°Π½ Π°Π½Π°Π»ΠΈΠ· Π³Π΅ΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ°Π·Π½ΠΎΠΎΠ±ΡΠ°Π·ΠΈΡ ΡΠ΅ΡΠΈ ΠΠΠΠ’ ΠΈ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½ΠΎΡΡΠΈ Π΅Π΅ Π² Π°Π΄ΠΌΠΈΠ½ΠΈΡΡΡΠ°ΡΠΈΠ²Π½ΡΡ
ΡΠ°ΠΉΠΎΠ½Π°Ρ
ΠΎΠ±Π»Π°ΡΡΠΈ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Π° ΡΠΎΠ»Ρ ΡΠ΅ΡΠΈ ΠΠΠΠ’ Π² ΡΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΠΈ ΡΠ΅Π΄ΠΊΠΈΡ
ΠΈ ΠΈΡΡΠ΅Π·Π°ΡΡΠΈΡ
Π²ΠΈΠ΄ΠΎΠ² ΡΠ°ΡΡΠ΅Π½ΠΈΠΉ ΠΈ ΠΆΠΈΠ²ΠΎΡΠ½ΡΡ
. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π° ΠΈ ΡΠ΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΠΎΠΉ ΠΎΡΠ΅Π½ΠΊΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ΅ΡΠΈ ΠΠΠΠ’. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ ΠΏΡΡΠΈ Π΅Π΅ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΈ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ.In work the characteristic of the network of specially protected natural territories of the Tomsk region, its role in maintaining ecological and economic balance of the region. The stages of forming a network of protected areas. The analysis of the geographic diversity of the PA network and its representation in the administrative districts of the region. Defined the role of the network of protected areas in the conservation of rare and endangered species of plants and animals. Developed and implemented a methodology of comprehensive evaluation of the effectiveness of the PA network. The proposed ways of its development and optimization
ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π΄Π°ΡΡΠΈΠΊΠΎΠ² ΡΠ ΠΈ ΡΠ΄Π΅Π»ΡΠ½ΠΎΠΉ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ ΡΠΈΡΠΌΡ WTW Π² ΡΠΈΡΡΠ΅ΠΌΠ΅ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΠΊΠ°ΡΠ΅ΡΡΠ²Π° ΠΎΡΠΈΡΡΠΊΠΈ ΡΡΠΎΡΠ½ΡΡ Π²ΠΎΠ΄
We demonstrate the suitability of microcavities based on circular grating resonators (CGRs) as fast switches. This type of optical resonator is characterized by a high quality factor and very small mode volume. The waveguide-coupled CGRs are fabricated with silicon-on-insulator technology compatible with standard complementary metal-oxide semiconductor (CMOS) processing. The linear optical properties of the CGRs are investigated by transmission spectroscopy. From 3D finite-difference time-domain simulations of isolated CGRs, we identify the measured resonances. We probe the spatial distribution and the parasitic losses of a resonant optical mode with scanning near-field optical microscopy. We observe fast all-optical switching within a few picoseconds by optically generating free charge carriers within the cavity. (C) 2009 Optical Society of Americ
ΠΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ΅Ρ Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π·Π°Π²ΠΎΠ΄Π°
Π ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ ΡΠ°ΡΡΠ΅Ρ Π½Π°Π³ΡΡΠ·ΠΎΠΊ ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΠΈ Π±Π°Π·Ρ Π² ΡΠ΅Π»ΠΎΠΌ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ², Π²ΡΠ±ΠΎΡ ΠΌΠ΅ΡΠΎΠ΄Π° ΡΠ°ΡΡΠ΅ΡΠ° ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΠ»ΡΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΈΡΡ
ΠΎΠ΄Π½ΡΡ
Π΄Π°Π½Π½ΡΡ
, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΎΡΡΡΠ΅ΡΡΠ²Π»Π΅Π½ Π²ΡΠ±ΠΎΡ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈ Π΅Π³ΠΎ ΠΏΡΠΎΠ²Π΅ΡΠΊΠ° ΠΏΡΠΈ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠ΅ΠΆΠΈΠΌΠ°Ρ
ΡΠ°Π±ΠΎΡΡ.
Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π±ΡΠ»Π° ΡΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½Π° ΠΊΠΎΠ½ΠΊΡΠ΅ΡΠ½Π°Ρ ΠΌΠΎΠ΄Π΅Π»Ρ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΡ Π±Π°Π·Ρ ΠΏΠΎ ΠΎΠ±ΡΠ»ΡΠΆΠΈΠ²Π°Π½ΠΈΡ Π½Π΅ΡΡΠ΅Π³Π°Π·ΠΎΠ΄ΠΎΠ±ΡΠ²Π°ΡΡΠ΅Π³ΠΎ ΠΌΠ΅ΡΡΠΎΡΠΎΠΆΠ΄Π΅Π½ΠΈΡ, ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π° Π΅Π΅ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ΅Π»Π΅ΡΠΎΠΎΠ±ΡΠ°Π·Π½ΠΎΡΡΡ ΠΈ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΡΡΡ Π΄Π»Ρ ΠΎΠΊΡΡΠΆΠ°ΡΡΠ΅ΠΉ ΡΡΠ΅Π΄Ρ.In the process of studying the calculation of the load and base as a whole with the use of various methods, the choice of the calculation method on the basis of the initial data, and also the selection of equipment and its verification under various operating modes was carried out.
As a result of the research, a specific model of power supply for the oil and gas industry maintenance base, its economic feasibility and safety for the environment was designed
Silicon-organic hybrid electro-optical devices
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 GHz, high-speed operation beyond 112 Gbit/s with fJ/bit power consumption. In this paper, we review the SOH platform and discuss important devices such as Mach-Zehnder and IQ-modulators based on the linear electro-optic effect. We further show liquid-crystal phase-shifters with a voltage-length product as low as V pi L = 0.06 V.mm and sub-mu W power consumption as required for slow optical switching or tuning optical filters and devices
Π’Π΅Ρ Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΡΡΡΠΎΠΈΡΠ΅Π»ΡΡΡΠ²Π° ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π½Π°ΠΊΠ»ΠΎΠ½Π½ΠΎ-Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π½ΠΎΠΉ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Π³Π»ΡΠ±ΠΈΠ½ΠΎΠΉ 3673 ΠΌΠ΅ΡΡΠΎΠ² Π½Π° ΠΡΡΠΈΠ½ΡΠΊΠΎΠΌ Π½Π΅ΡΡΠ΅Π³Π°Π·ΠΎΠΊΠΎΠ½Π΄Π΅Π½ΡΠ°ΡΠ½ΠΎΠΌ ΠΌΠ΅ΡΡΠΎΡΠΎΠΆΠ΄Π΅Π½ΠΈΠΈ (Π’ΠΎΠΌΡΠΊΠ°Ρ ΠΎΠ±Π»Π°ΡΡΡ)
Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΡΡΡΠΎΠΈΡΠ΅Π»ΡΡΡΠ²Π° Π½Π°ΠΊΠ»ΠΎΠ½Π½ΠΎ-Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π½ΠΎΠΉ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Π³Π»ΡΠ±ΠΈΠ½ΠΎΠΉ 3673 ΠΌΠ΅ΡΡΠΎΠ² Π½Π° ΠΡΡΠΈΠ½ΡΠΊΠΎΠΌ Π½Π΅ΡΡΠ΅Π³Π°Π·ΠΎΠΊΠΎΠ½Π΄Π΅Π½ΡΠ°ΡΠ½ΠΎΠΌ ΠΌΠ΅ΡΡΠΎΡΠΎΠΆΠ΄Π΅Π½ΠΈΠΈ.
Π ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π² ΡΠΏΠ΅ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΠ°ΡΡΠΈ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π»ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Π²ΡΠΊΡΡΡΠΈΡ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΡΡ
ΠΏΠ»Π°ΡΡΠΎΠ² Π½Π° Π΄Π΅ΠΏΡΠ΅ΡΡΠΈΠΈ. Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Ρ ΠΌΠ΅ΡΠΎΠΏΡΠΈΡΡΠΈΡ ΠΏΠΎ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ ΡΡΡΠΎΠΈΡΠ΅Π»ΡΡΡΠ²Π°, ΠΎΡ
ΡΠ°Π½Π΅ ΡΡΡΠ΄Π° ΠΈ ΠΎΠΊΡΡΠΆΠ°ΡΡΠ΅ΠΉ ΡΡΠ΅Π΄Ρ.
Π‘ΡΠ΅ΠΏΠ΅Π½Ρ Π²Π½Π΅Π΄ΡΠ΅Π½ΠΈΡ: Π½Π° Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΡΡΠΎΠ²Π½Π΅.Purpose β technological solutions for the construction of directional well with a depth of 3673 meters Archinskoye oil and gas condensate field. In the process of research in special parts theoretically considered the possibility of qualitative opening of productive layers on depression. The study Developed measures for the organization of construction, occupational safety and the environment.
Level of implementation: at the analytical level
Silicon-Organic Hybrid (SOH) and Plasmonic-Organic Hybrid (POH) integration
Silicon-organic hybrid (SOH) and plasmonic-organic hybrid (POH) integration combines organic clectro-optic materials with silicon photonic and plasmonic waveguides, The concept enables fast and power-efficient modulators that support advanced modulation formats such as QPSK and 16QAM
Silicon-Organic Hybrid (SOH) and Plasmonic-Organic Hybrid (POH) integration
Silicon photonics offers tremendous potential for inexpensive high-yield photonic-electronic integration. Besides conventional dielectric waveguides, plasmonic structures can also be efficiently realized on the silicon photonic platform, reducing device footprint by more than an order of magnitude. However, nei-ther silicon nor metals exhibit appreciable second-order optical nonlinearities, thereby making efficient electro-optic modulators challenging to realize. These deficiencies can be overcome by the concepts of silicon-organic hybrid (SOH) and plasmonic-organic hybrid integration, which combine SOI waveguides and plasmonic nanostructures with organic electro-optic cladding materials
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