Ohmic Contacts With Ultra-Low Optical Loss on Heavily Doped n
... Fig. 2. (a) Schematic cross-section of a membrane WG with a contact layer (50 nm) on top. (b) Microscope image of an array of the fabricated WGs of various length. The dark parts at both ends of each WG are the grating couplers. ...
... Fig. 2. (a) Schematic cross-section of a membrane WG with a contact layer (50 nm) on top. (b) Microscope image of an array of the fabricated WGs of various length. The dark parts at both ends of each WG are the grating couplers. ...
The Optical Resonator
... § The optical resonator (OR) is the optical counterpart of an electronic resonant circuit: it confines and stores light at certain frequencies. § Most important application: OR as a container within which laser light is ...
... § The optical resonator (OR) is the optical counterpart of an electronic resonant circuit: it confines and stores light at certain frequencies. § Most important application: OR as a container within which laser light is ...
Fabrication and characterization of silicone-based - lammp
... uniformed phantoms with predictable optical properties in the NIR spectrum. To begin, 25 ml curing agent is retrieved with a disposable pipette and placed in a 25 ml plastic beaker. TiO2 is measured by weight and added to the curing agent. This is manually mixed and placed in an ultrasonic bath (BR ...
... uniformed phantoms with predictable optical properties in the NIR spectrum. To begin, 25 ml curing agent is retrieved with a disposable pipette and placed in a 25 ml plastic beaker. TiO2 is measured by weight and added to the curing agent. This is manually mixed and placed in an ultrasonic bath (BR ...
Nanomechanical Motion Transducers for Miniaturized
... Q-factor, for example, via chemical surface treatment [22], external circuits [23] and parametric amplification [24]. The resonance frequency f r is determined by the geometry—e.g., cantilevered or torsional structures—and the linear dimensions of the device as well as the device material. The stres ...
... Q-factor, for example, via chemical surface treatment [22], external circuits [23] and parametric amplification [24]. The resonance frequency f r is determined by the geometry—e.g., cantilevered or torsional structures—and the linear dimensions of the device as well as the device material. The stres ...
Nanomechanical Motion Transducers for Miniaturized
... Q-factor, for example, via chemical surface treatment [22], external circuits [23] and parametric amplification [24]. The resonance frequency f r is determined by the geometry—e.g., cantilevered or torsional structures—and the linear dimensions of the device as well as the device material. The stres ...
... Q-factor, for example, via chemical surface treatment [22], external circuits [23] and parametric amplification [24]. The resonance frequency f r is determined by the geometry—e.g., cantilevered or torsional structures—and the linear dimensions of the device as well as the device material. The stres ...
Diffuse optical imaging
... Arguably the most successful series of studies has been that performed by the Hitachi Medical Corporation (Tokyo, Japan) using their ETG-100 system (Koizumi et al. 2003). This optical topography system (Yamashita et al. 1999) uses eight laser diodes at 780 nm and eight at 830 nm and eight avalanche ...
... Arguably the most successful series of studies has been that performed by the Hitachi Medical Corporation (Tokyo, Japan) using their ETG-100 system (Koizumi et al. 2003). This optical topography system (Yamashita et al. 1999) uses eight laser diodes at 780 nm and eight at 830 nm and eight avalanche ...
(full text)
... the NbN nanowire arrays are similar to wire-grid polarizers, to analyze their polarization-dependent absorptance, rigorous coupled-wave analysis (RCWA) was adopted in [6] from the theory of wire-gridpolarizers [5]. The two specific periodic-pattern orientations are referred to as either P-structures ...
... the NbN nanowire arrays are similar to wire-grid polarizers, to analyze their polarization-dependent absorptance, rigorous coupled-wave analysis (RCWA) was adopted in [6] from the theory of wire-gridpolarizers [5]. The two specific periodic-pattern orientations are referred to as either P-structures ...
Picosecond-pulse amplification with an external passive optical cavity
... It has been proposed, both in a recent patent11 and in the scientific literature,12 that this approach can be extended to amplify pulses from a mode-locked laser. The coherent superposition of mode-locked pulses stored in a passive optical cavity results in a single amplif ied pulse when switched ou ...
... It has been proposed, both in a recent patent11 and in the scientific literature,12 that this approach can be extended to amplify pulses from a mode-locked laser. The coherent superposition of mode-locked pulses stored in a passive optical cavity results in a single amplif ied pulse when switched ou ...
PDF only
... applications, particularly because the power from the CW laser does not distribute in a uniform manner across the bandwidth. In order to increase the modulation efficiency, several resonant schemes have been reported (we shall discuss the spectral flatness issue in the following section). The Fabry- ...
... applications, particularly because the power from the CW laser does not distribute in a uniform manner across the bandwidth. In order to increase the modulation efficiency, several resonant schemes have been reported (we shall discuss the spectral flatness issue in the following section). The Fabry- ...
Measuring amplitude and phase in optical fields with
... The goals of this work are several. The first is the contribution to the understanding of optical fields. In scanning near-field optical microscopy, the field generated by an object, especially by sub-wavelength objects, is different from the object itself. In general, rigorous diffraction theory is ...
... The goals of this work are several. The first is the contribution to the understanding of optical fields. In scanning near-field optical microscopy, the field generated by an object, especially by sub-wavelength objects, is different from the object itself. In general, rigorous diffraction theory is ...
![[pdf]](http://s1.studyres.com/store/data/008852314_1-35458503496d5f6203b2b608f2a20f3d-300x300.png)
[pdf]
... vapor length. The cell was maintained at a constant temperature of about 750 K to produce a weak signal absorption of 50% at line center. The absence of a hyperfine interaction in 174Yb allowed us to realize ideal two-level atomic response by employing circularly polarized excitation fields and appl ...
... vapor length. The cell was maintained at a constant temperature of about 750 K to produce a weak signal absorption of 50% at line center. The absence of a hyperfine interaction in 174Yb allowed us to realize ideal two-level atomic response by employing circularly polarized excitation fields and appl ...
Frequency domain optical parametric amplification - few
... amplified in the time domain, we propose to amplify their corresponding spectral parts independent of each other in a frequency domain optical parametric amplifier (FOPA). In this manner, simultaneous upscaling of pulse energy and amplified bandwidth becomes possible. This single device paves the way f ...
... amplified in the time domain, we propose to amplify their corresponding spectral parts independent of each other in a frequency domain optical parametric amplifier (FOPA). In this manner, simultaneous upscaling of pulse energy and amplified bandwidth becomes possible. This single device paves the way f ...
PDF - Photonics Research Group
... The ever-growing demand in data transport networks has promoted the development of highdensity high-speed photonic integrated circuits [1]. Recently photonic membrane technologies, like the InP-Membrane-on-Silicon (IMOS) platform [2], attract significant attention. Thanks to the high refractive inde ...
... The ever-growing demand in data transport networks has promoted the development of highdensity high-speed photonic integrated circuits [1]. Recently photonic membrane technologies, like the InP-Membrane-on-Silicon (IMOS) platform [2], attract significant attention. Thanks to the high refractive inde ...
full text pdf
... optical absorption), and c) transverse optical structure in the silks. The electromagnetic scattering theory can then be used to link the observed residual visibility to the optical characteristics of the silks, enabling the measurement of the principal refractive indices, the optical absorption (if ...
... optical absorption), and c) transverse optical structure in the silks. The electromagnetic scattering theory can then be used to link the observed residual visibility to the optical characteristics of the silks, enabling the measurement of the principal refractive indices, the optical absorption (if ...
Optical link module
... Siemens provides products and solutions with industrial security functions that support the secure operation of plants, solutions, machines, equipment and/or networks. They are important components in a holistic industrial security concept. With this in mind, Siemens’ products and solutions undergo ...
... Siemens provides products and solutions with industrial security functions that support the secure operation of plants, solutions, machines, equipment and/or networks. They are important components in a holistic industrial security concept. With this in mind, Siemens’ products and solutions undergo ...
Fabrication of Cube Beamsplitters for White Light Interferometry
... modulo ambiguity associated with interference periodicity of single laser source systems. This advantage is based on the principle that acceptable fringe visibility only occurs when both arms of the interferometer have matching optical path lengths (OPL) for each wavelength of the broadband light so ...
... modulo ambiguity associated with interference periodicity of single laser source systems. This advantage is based on the principle that acceptable fringe visibility only occurs when both arms of the interferometer have matching optical path lengths (OPL) for each wavelength of the broadband light so ...
Liquid-crystal photonic applications
... decreases with increasing N , and also, the unwanted transmission at other wavelengths is suppressed. By changing the voltage applied to the different LC cells, the transmitted wavelength can be tuned. The thickest LC cell determines the speed of the device; thus, in practical devices, this thicknes ...
... decreases with increasing N , and also, the unwanted transmission at other wavelengths is suppressed. By changing the voltage applied to the different LC cells, the transmitted wavelength can be tuned. The thickest LC cell determines the speed of the device; thus, in practical devices, this thicknes ...
Towards Multimaterial Multifunctional Fibres that See, Hear, Sense and Communicate
... bandgap10–12 (PBG) effect have been demonstrated. The wide variety of results obtained by these fibres has been recently reviewed, and the reader is referred to these reviews for further details13,14. The materials used in these fibres are the traditional materials, namely silica glasses or polymers ...
... bandgap10–12 (PBG) effect have been demonstrated. The wide variety of results obtained by these fibres has been recently reviewed, and the reader is referred to these reviews for further details13,14. The materials used in these fibres are the traditional materials, namely silica glasses or polymers ...
NONLINEAR SCATTERING EFFECTS IN OPTICAL FIBERS
... 2. The effect of small gain bandwidth of SBS phenomenon can be decreased by increasing the linewidth of the source used. The linewidth can be increased because of chirping effect by direct modulation of source laser. This may results in significant dispersion penalty, which can be reduced by suitable d ...
... 2. The effect of small gain bandwidth of SBS phenomenon can be decreased by increasing the linewidth of the source used. The linewidth can be increased because of chirping effect by direct modulation of source laser. This may results in significant dispersion penalty, which can be reduced by suitable d ...
Helium Neon Laser - Abbe School of Photonics
... 1 Safety issues 1.1 Eye hazard The laser system used is classified according to DIN IEC 60825-1 as a Class 3B Laser. This means the visible, continuous wave laser radiation emitted during laser operation has an average power of less than 5 mW. Therefore the laser radiation itself and also the stray ...
... 1 Safety issues 1.1 Eye hazard The laser system used is classified according to DIN IEC 60825-1 as a Class 3B Laser. This means the visible, continuous wave laser radiation emitted during laser operation has an average power of less than 5 mW. Therefore the laser radiation itself and also the stray ...
Preparation of Poincare' beams with a same-path polarization/spatial-mode interferoemter
... phase between the two terms of the superposition via the encoding of the SLMs. However, that is not a restriction. One can easily use an alternative means to introduce a specific relative phase: a Pancharatnam–Berry phase shifter.22 This type of device, the most simple of which consists of three wav ...
... phase between the two terms of the superposition via the encoding of the SLMs. However, that is not a restriction. One can easily use an alternative means to introduce a specific relative phase: a Pancharatnam–Berry phase shifter.22 This type of device, the most simple of which consists of three wav ...
Measuring the spatiotemporal electric field of
... To measure Eunk共兲 using SEA TADPOLE, we couple the reference and unknown pulses into two identical fibers. The output ends of the fibers are placed close together, so that when the light diverges from them, both beams are collimated with the same spherical lens (focal length f). Because the fibers ...
... To measure Eunk共兲 using SEA TADPOLE, we couple the reference and unknown pulses into two identical fibers. The output ends of the fibers are placed close together, so that when the light diverges from them, both beams are collimated with the same spherical lens (focal length f). Because the fibers ...
Diffractive optical element and optical pickup apparatus
... [0062] Examples of the next-generation DVD include not only optical disks having a standard speci?cation that infor mation is recorded and reproduced through an objective lens having a numerical aperture NA of 0.85 and a protective layer having a thickness of about 0.1 mm is formed, (speci?cally, fo ...
... [0062] Examples of the next-generation DVD include not only optical disks having a standard speci?cation that infor mation is recorded and reproduced through an objective lens having a numerical aperture NA of 0.85 and a protective layer having a thickness of about 0.1 mm is formed, (speci?cally, fo ...
Fiber optic sensor network for the monitoring of civil
... The security of civil engineering works demands a periodical monitoring of the structures. The current methods (such as triangulation, water levels, vibrating strings or mechanical extensometers) are often of tedious application and require the intervention of specialized operators. The resulting co ...
... The security of civil engineering works demands a periodical monitoring of the structures. The current methods (such as triangulation, water levels, vibrating strings or mechanical extensometers) are often of tedious application and require the intervention of specialized operators. The resulting co ...
Fiber-optic communication
Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic carrier wave that is modulated to carry information. First developed in the 1970s, fiber-optic communication systems have revolutionized the telecommunications industry and have played a major role in the advent of the Information Age. Because of its advantages over electrical transmission, optical fibers have largely replaced copper wire communications in core networks in the developed world. Optical fiber is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Researchers at Bell Labs have reached internet speeds of over 100 petabit×kilometer per second using fiber-optic communication.The process of communicating using fiber-optics involves the following basic steps: Creating the optical signal involving the use of a transmitter, relaying the signal along the fiber, ensuring that the signal does not become too distorted or weak, receiving the optical signal, and converting it into an electrical signal.