Advanced microphotonic device designs in strongly confining silicon and silicon nitride waveguides, novel photonic device concepts, and the first experimental demonstrations of these structures are described. They sho...
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Advanced microphotonic device designs in strongly confining silicon and silicon nitride waveguides, novel photonic device concepts, and the first experimental demonstrations of these structures are described. They show a progression of new optical signal processing capabilities that enable chip-scale microphotonic routers for high bandwidth and fine granularity optical wavelength routing networks. Rigorous theoretical models are developed that enable the design of efficient high-index-contrast (HIC) microphotonic components and set theoretical bounds for their capabilities. They take into account new, coupling induced resonance-frequency shifting and parasitic loss effects. Based on microring resonators and HIC silicon and silicon nitride waveguides, the first telecom-grade microphotonic channel add-drop filters are demonstrated, including novel, dispersion-free switchable and widely tunable designs. Several new classes of optical devices are proposed. The first, universally balanced interferometers, enable filters capable of "fully transparent" tuning and increased accessible wavelength range, facilitate a novel proposed photonic-circuit "hot-swapping" functionality, and approximate an optical nearinverse operator in a general way. The second, loop-coupled resonators, enable optimally sharp filters and flat-top, dispersionless light-slowing structures that are not limited by the Kramers-Kronig amplitude-dispersion tradeoff. A third class provides a general approach to disabling both the amplitude and phase response of resonant systems to achieve a fulltransparency off state. They allow a robust integrated solution to hitless, errorless filter tuning and wavelength-reach expansion in filters, topical problems of considerable technological importance. (cont) Taken together these developments permit a complete tunable/reconfigurable optical add-drop multiplexer (T/R-OADM) to be constructed on a silicon chip, with performance well beyond that of current technology. Suc
The proceedings contain 34 papers. The topics discussed include: fundamental and specific steps in Shack-Hartmann wavefront sensor design;a hardware-based simulation platform for opticaldesign and engineering;low pro...
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ISBN:
(纸本)0819463671
The proceedings contain 34 papers. The topics discussed include: fundamental and specific steps in Shack-Hartmann wavefront sensor design;a hardware-based simulation platform for opticaldesign and engineering;low profile optic for mobile camera using dual freedom reflective lenses;end-to-end compensation of digital-optical imaging system;opticaldesign for the adaptive secondary setup and instrument stimulator (ASSIST);actual field curvature and isoquals;self-weight distortion of lens elements;influence of striae on the homogeneity of the linear thermal expansion coefficient of ZERODUR;sedimentations on high precision surfaces of advanced materials by magnetorheological finishing;automatic birefringence characterization of single-mode erbium-doped fibers within the amplification band;stabilization of the line of sight of a cryogenic optical system;and design of a thermal imaging diagnostic using 90-degree off-axis parabolic mirrors.
The traditional approach to optical system engineering separates the scene, optics, and detector as static entities, optimizing the design to meet subsystem specifications of aperture, field size, encircled energy, re...
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ISBN:
(纸本)9780819468154
The traditional approach to optical system engineering separates the scene, optics, and detector as static entities, optimizing the design to meet subsystem specifications of aperture, field size, encircled energy, read noise, dynamic range, and other electro-optical properties. The Scene-Based Sensor Model (SBSM) represents a different approach by simulating the scene, optics and detector as a cohesive model using commercially available optical ray-tracing software. The objects are modeled as temporally changing entities, with characteristics including reflectance, absorbance, fluorescence, and scattering. Likewise, the detectors are modeled with their properties of temporal noise, spatial non-uniformity, nonlinear gain, and offset drift. The end-to-end simulation produces "photons-to-bits" analysis applicable to a variety of optical systems. First results are illustrated with ray tracing simulation of moving fluorescent objects and laser induced breakdown spectroscopy.
A refractive astigmatic lens is employed to generate a focus error signal (FES) for servo control in general optical pickup. In this paper, a diffractive optical element (DOE) is designed to implement optical function...
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ISBN:
(纸本)9780819468154
A refractive astigmatic lens is employed to generate a focus error signal (FES) for servo control in general optical pickup. In this paper, a diffractive optical element (DOE) is designed to implement optical functions of astigmatic focusing for a MEMS-based miniature optical pickup at 650nm wavelength. We present a diffractive astigmatic lens with its internal zones and external zones quantized into four, two phase levels, respectively based on fabrication consideration. The optical simulation based on scalar diffraction theory shows the efficiency of this quantized lens for astigmatic focusing and a comparison of the FES in the optical pickup system has been plotted.
Nowadays most industrial and laboratory motion measuring equipment makes use of optical encoders to measure rotation and linear displacements with sub-micrometrical resolution. In this work we introduce a new design o...
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ISBN:
(纸本)9780819468154
Nowadays most industrial and laboratory motion measuring equipment makes use of optical encoders to measure rotation and linear displacements with sub-micrometrical resolution. In this work we introduce a new design of an optical encoder based on a non diffractive beam, a binary amplitude grating and a monolithic photodetector. Two theoretical models of the system are proposed and implemented to obtain numerical results. The performance of the design is also investigated through experimental measurements. Finally, the experimental results are compared with the models predictions.
The new combined optical pick-up head for recording and playback of information on DVD and BD format discs was developed. The same objective is used for both channels. It consists of the objective lens and Holographic...
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ISBN:
(纸本)9780819468154
The new combined optical pick-up head for recording and playback of information on DVD and BD format discs was developed. The same objective is used for both channels. It consists of the objective lens and Holographic optical Element. In this work we present the main results of the studies of the possibility to manufacture the HOE included in objective of BD/DVD combined optical pick-up head in the dependence on objective lens glass type.
A pupil engineered with a polarization vortex can have a profound impact on certain classes of optical systems. This paper describes the recent history, ongoing activity, and applications of polarization vortices in o...
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ISBN:
(纸本)9780819468154
A pupil engineered with a polarization vortex can have a profound impact on certain classes of optical systems. This paper describes the recent history, ongoing activity, and applications of polarization vortices in optical system design, with special attention to the impact of a vortex filter placed in the pupil of an illumination system. Two systems of particular interest for these types of fields are confocal microscopy, in which a dark field imaging mode is accessible, and immersion lithography, in which azimuthal illumination is favored.
Studies on adaptive lenses, which are formed of two transparent elastic surfaces and have a transparent liquid medium between them, have focused mostly on the characterization, analysis and optical performance of the ...
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ISBN:
(纸本)9780819468154
Studies on adaptive lenses, which are formed of two transparent elastic surfaces and have a transparent liquid medium between them, have focused mostly on the characterization, analysis and optical performance of the proposed lenses. No attention, however, has been given to the mechanical design that would allow the conception of a user-friendly functional mounting that is adaptable to conventional optical systems. This work, therefore, presents the design and manufacturing processes of the mounting for a 20 mm diameter biconvex adaptive lens. It also presents an analysis of the membranes used as elastic surfaces and the images formation of the proposed lens.
Saddle-point construction (SPC) is a new method to insert lenses into an existing design. With SPC, by inserting and extracting, lenses new system shapes can be obtained very rapidly, and we believe that, if added to ...
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ISBN:
(纸本)9780819468154
Saddle-point construction (SPC) is a new method to insert lenses into an existing design. With SPC, by inserting and extracting, lenses new system shapes can be obtained very rapidly, and we believe that, if added to the opticaldesigner's arsenal, this new tool can significantly increase design productivity in certain situations. Despite the fact that the theory behind SPC contains mathematical concepts that are still unfamiliar to many opticaldesigners, the practical implementation of the method is actually very easy and the method can be fully integrated with all other traditional design tools. In this work we will illustrate the use of SPC with examples that are very simple and illustrate the essence of the method. The method can be used essentially in the same way even for very complex systems with a large number of variables, in situations where other methods for obtaining new system shapes do not work so well.
Here, we consider one of the most important problems related to optimizing the performance data of a new acousto-optical spectrometer for the analysis of radio-astronomical signals. The main attention is paid to estim...
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ISBN:
(纸本)9780819468154
Here, we consider one of the most important problems related to optimizing the performance data of a new acousto-optical spectrometer for the analysis of radio-astronomical signals. The main attention is paid to estimating two factors governing the dynamic range of that spectrometer. At first, we determine the influence of the acoustic attenuation along a large-aperture acousto-optical cell on potential levels of lobes in focal plane of the integrating lens and then describe capabilities of the incident light beam apodization for increasing the dynamic range of spectrometer. These studies lie in a line with the program of developing metrological equipment for Mexican Large Millimeter Telescope.
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