WINDOWS During the Apollo (manned lunar exploration) space
... probably will be air (n1 = 1.0). The other probably will be some other glass (n2 ~ 1.5). Using Equation 3, you can calculate a reflection of ~ 4%. This calculation is for one side of the window. When the rays emerge from the other side, another 4% reflection loss is encountered. In summary, we reali ...
... probably will be air (n1 = 1.0). The other probably will be some other glass (n2 ~ 1.5). Using Equation 3, you can calculate a reflection of ~ 4%. This calculation is for one side of the window. When the rays emerge from the other side, another 4% reflection loss is encountered. In summary, we reali ...
High speed hybrid silicon evanescent Mach
... (ER), 30 nm optical bandwidth, and over 16 GHz modulation bandwidth. Another new approach is to use carrier depletion inside offset multiple quantum wells (MQW) in a hybrid silicon evanescent MZM. This MZM have less wavelength sensitivity and larger optical bandwidth compared to an EAM. Most import ...
... (ER), 30 nm optical bandwidth, and over 16 GHz modulation bandwidth. Another new approach is to use carrier depletion inside offset multiple quantum wells (MQW) in a hybrid silicon evanescent MZM. This MZM have less wavelength sensitivity and larger optical bandwidth compared to an EAM. Most import ...
Semiconductor Devices
... domain formation can again take place. The successive formation and drift of Gunn-domains through the sample leads to ac current oscillations observed at the contacts. In this mode of operation, called the Gunn-mode, the frequency of the oscillations is dictated primarily by the distance the domains ...
... domain formation can again take place. The successive formation and drift of Gunn-domains through the sample leads to ac current oscillations observed at the contacts. In this mode of operation, called the Gunn-mode, the frequency of the oscillations is dictated primarily by the distance the domains ...
Link to PowerPoint Presentation
... ٭Find the critical angle to the longitudinal axis in a standard optical fiber. n of cladding = 1.343 n of core = 1.557 ...
... ٭Find the critical angle to the longitudinal axis in a standard optical fiber. n of cladding = 1.343 n of core = 1.557 ...
In this lab you will use the phenomenon of interference... thickness of thin films. Two interference techniques, Michelson and... Thin Film Measurement 1 Introduction
... thickness of thin films. Two interference techniques, Michelson and Fizeau, will be studied and compared for accuracy, resolution and ease of use. The Michelson technique uses a Michelson interferometer with one of the mirrors replaced with the sample under test. The Fizeau technique uses a Fizeau i ...
... thickness of thin films. Two interference techniques, Michelson and Fizeau, will be studied and compared for accuracy, resolution and ease of use. The Michelson technique uses a Michelson interferometer with one of the mirrors replaced with the sample under test. The Fizeau technique uses a Fizeau i ...
Application of Optical Coherence Tomography for
... This variability indicates differences in retinal thickness depending on location and image quality. We obtained a mean intra-animal SD of 4.9 µm, thus indicating good reproducibility of the marker positioning per animal. ...
... This variability indicates differences in retinal thickness depending on location and image quality. We obtained a mean intra-animal SD of 4.9 µm, thus indicating good reproducibility of the marker positioning per animal. ...
Temporal coherence characteristics of a superluminescent
... Broadband light sources such as light-emitting diodes (LEDs) and superluminescent diodes (SLDs) have been widely used for the optical measurement [1], and especially the SLD broadband source has been playing an important role in the optical coherence tomography system [2,3]. High output power and la ...
... Broadband light sources such as light-emitting diodes (LEDs) and superluminescent diodes (SLDs) have been widely used for the optical measurement [1], and especially the SLD broadband source has been playing an important role in the optical coherence tomography system [2,3]. High output power and la ...
The Fresnel Biprism
... tightly packed interference pattern and as a result, there are more fringes spaced closer together. There was some potential error in setting up the system in that the rib of the prism was meant to be at the centre of the illuminated area, this is fairly subjective as the area surrounding the rib wa ...
... tightly packed interference pattern and as a result, there are more fringes spaced closer together. There was some potential error in setting up the system in that the rib of the prism was meant to be at the centre of the illuminated area, this is fairly subjective as the area surrounding the rib wa ...
Intro to FIRERAY OBSD
... smoke, the Optical Beam sends a signal to the Fire Alarm Control Panel ...
... smoke, the Optical Beam sends a signal to the Fire Alarm Control Panel ...
Slide
... 1810 - Graduated in civil engineering and went to work as a junior engineer where Napoleon planned to build a naval base 1812 – (age 23) Lost interest in engineering, being more attracted to abstract mathematics Cauchy had many major accomplishments in both mathematics and science in areas such as c ...
... 1810 - Graduated in civil engineering and went to work as a junior engineer where Napoleon planned to build a naval base 1812 – (age 23) Lost interest in engineering, being more attracted to abstract mathematics Cauchy had many major accomplishments in both mathematics and science in areas such as c ...
Research Directions
... When a magnetic field is applied the Zeeman shifts lead to a difference between the resonance frequencies for the two circular polarizations. This displaces the dispersion curves for the two polarizations. A characteristic width of these dispersion curves, G, corresponds to the spectral width of an ...
... When a magnetic field is applied the Zeeman shifts lead to a difference between the resonance frequencies for the two circular polarizations. This displaces the dispersion curves for the two polarizations. A characteristic width of these dispersion curves, G, corresponds to the spectral width of an ...
Lead Inventor: Serge Luryi, Ph.D., Distinguished Professor
... Professor, Department of Electrical & Computer Engineering, utilizes uniaxially patterned dielectric layers having an optical anisotropy that can be dynamically controlled. Performance properties are not dependant upon the geometrical rigidity of the structure (the long-range order of the pores or t ...
... Professor, Department of Electrical & Computer Engineering, utilizes uniaxially patterned dielectric layers having an optical anisotropy that can be dynamically controlled. Performance properties are not dependant upon the geometrical rigidity of the structure (the long-range order of the pores or t ...
Optical Diffraction and Image Formation
... Coherence is a measure of the statistical correlation between fields drawn from different points in space and time. Fields emerging from different points can only interfere, if they are coherent. Heated filaments emit short wave trains, which do not have any phase correlation, as the emission of lig ...
... Coherence is a measure of the statistical correlation between fields drawn from different points in space and time. Fields emerging from different points can only interfere, if they are coherent. Heated filaments emit short wave trains, which do not have any phase correlation, as the emission of lig ...
Optical Networks
... COURSE OBJECTIVE To learn the fiber optical network components, variety of networking aspects, SONET/SDH and ...
... COURSE OBJECTIVE To learn the fiber optical network components, variety of networking aspects, SONET/SDH and ...
Approximate Theory of Rectangular Optical Waveguides
... LED (right) are very different. The latter has a strongly-modified emission pattern due to the scattering of waveguided modes out of the LED chip. ...
... LED (right) are very different. The latter has a strongly-modified emission pattern due to the scattering of waveguided modes out of the LED chip. ...
PH4027 - Optoelectronics & Nonlinear Optics
... Optoelectronics is generally understood as the union of electronics and optics. Optoelectronics is mainly concerned with the generation, manipulation and detection of light in electronic materials. These materials are typically semiconductors, e.g. silicon and gallium arsenide, but can also be more ...
... Optoelectronics is generally understood as the union of electronics and optics. Optoelectronics is mainly concerned with the generation, manipulation and detection of light in electronic materials. These materials are typically semiconductors, e.g. silicon and gallium arsenide, but can also be more ...
Cell Mechanics
... NOT COMMONLY USED FOR BIOLOGICAL SYSTEMS and hence ignored B. Ray Optics Regime (D >> λ) In the ray optics regime, the size of the object is much larger than the wave lenght of the light, and a single beam can be tracked throughout the particle. (This situation is for example when whole cells are tr ...
... NOT COMMONLY USED FOR BIOLOGICAL SYSTEMS and hence ignored B. Ray Optics Regime (D >> λ) In the ray optics regime, the size of the object is much larger than the wave lenght of the light, and a single beam can be tracked throughout the particle. (This situation is for example when whole cells are tr ...
hino Hills Eyecare - Dr. Suneet Gupta, OD
... _____ I DO want to have my/my child’s eyes dilated at this time and understand the side effects. _____I DO NOT want to have my/my child’s eyes dilated at this time but do understand the importance of the procedure. (You may ask to schedule another time) ...
... _____ I DO want to have my/my child’s eyes dilated at this time and understand the side effects. _____I DO NOT want to have my/my child’s eyes dilated at this time but do understand the importance of the procedure. (You may ask to schedule another time) ...
Near-field amplitude and phase recovery using phase
... homodyned interferometric measurements are taken at each pixel, separated by π /2 radians in optical phase, typically accomplished by movement of the reference mirror[15]. From these two measurements, amplitude and phase may be extracted in post-processing. The two measurements may be instantaneous ...
... homodyned interferometric measurements are taken at each pixel, separated by π /2 radians in optical phase, typically accomplished by movement of the reference mirror[15]. From these two measurements, amplitude and phase may be extracted in post-processing. The two measurements may be instantaneous ...
BPM Blatt 7
... sphere with a higher refractive index than its background.The relative thickness of the two representative rays (black arrows)symbolizes intensity. The rays are refracted, giving rise to the reaction forces shown acting through the sphere’s center (gray arrows). The brighter right ray conveys more f ...
... sphere with a higher refractive index than its background.The relative thickness of the two representative rays (black arrows)symbolizes intensity. The rays are refracted, giving rise to the reaction forces shown acting through the sphere’s center (gray arrows). The brighter right ray conveys more f ...
High-resolution retinal microscopy using MEMS
... the leading causes of blindness. It is demonstrated in this work that the µDM can enable diffraction-limited imaging of microscale features on and below the surface of the retina, through real-time compensation of aberrations introduced by the eye's cornea and lens. The scanning laser ophthalmoscope ...
... the leading causes of blindness. It is demonstrated in this work that the µDM can enable diffraction-limited imaging of microscale features on and below the surface of the retina, through real-time compensation of aberrations introduced by the eye's cornea and lens. The scanning laser ophthalmoscope ...
Invisibility Cup - Purdue Engineering
... is that metals absorb light more strongly than microwaves, because they have a much greater electrical resistance at visible light frequencies. Cai et al.2 get round this problem by designing their wires to have as little resistance as possible. The wires resemble the structures they applied in thei ...
... is that metals absorb light more strongly than microwaves, because they have a much greater electrical resistance at visible light frequencies. Cai et al.2 get round this problem by designing their wires to have as little resistance as possible. The wires resemble the structures they applied in thei ...
Communications Employing Binary Polarization Shift Keying (2PolSK)
... Highly sensitive to the phase noise; Requires a complex synchronization [2]; FM Disadvantages Bandwidth inefficient; Inferior BER performance compared to PM in the additive white Gaussian noise (AWGN) channel [3]; Alternative solution ─ PolSK High immunity to the laser phase noise [3]; Maint ...
... Highly sensitive to the phase noise; Requires a complex synchronization [2]; FM Disadvantages Bandwidth inefficient; Inferior BER performance compared to PM in the additive white Gaussian noise (AWGN) channel [3]; Alternative solution ─ PolSK High immunity to the laser phase noise [3]; Maint ...
View PDF - OMICS Group
... angle of 85°. A world record for material with low n=1.05 was obtained at an incident angle of 87°. They conduct research in development of graded-index AR, anti-reflection coatings for a new class of optical materials. Standard AR coating is 0.25λ thick and zero reflectivity is seen at one waveleng ...
... angle of 85°. A world record for material with low n=1.05 was obtained at an incident angle of 87°. They conduct research in development of graded-index AR, anti-reflection coatings for a new class of optical materials. Standard AR coating is 0.25λ thick and zero reflectivity is seen at one waveleng ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.