In this paper, we review many of the technical issues that must be addressed in developing high-quality optical disk recording media. The geometric design of tracking grooves and embossed data on the disk substrate must be optimized to the characteristics of the optical drive to support robust data seeking, track following, and data addressing. To ensure adequate recording performance and drive...

A nonlinear signal-processing model is derived for the optical recording channel based on scalar diffraction theory. In this model, the signal waveform is written in closed form as an explicit function of the channel bits that are stored on an optical disk, thereby comprising both linear and nonlinear terms. Its explicit dependence on the channel bits makes this model well suited for signal-pro...

© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 6594 wileyonlinelibrary.com With the introduction of optogenetics, [ 8,9 ] a method that permits ondemand excitation and inhibition of activity in optically-sensitized neurons with light pulses, integration of photonic modules into microelectronic neural recording probes yielded closed-loop sensor-actuator devices. [ 10 ] These probes often comb...

A new method for recording holograms using incoherent light is described. The method is based on optical propagation through birefringent crystals. Optical methods for the reconstruction of such a hologram are also presented.

background and objective: vep is a powerful method to study visual system via evaluating evoked potentials. technologic and instrumental restrictions may be the reason of having studies on optical modulation and induction such as color, spatial frequency and contrast. developments of computer software and hardware may lead to an increase in the flexibility of pattern designs. material and meth...

Optical scanning holography is a real-time holographic recording technique in which holographic information about a three-dimensional 3D object is acquired using a single two-dimensional active optical scan. Applications of the technique include optical scanning microscopy, pattern recognition, 3D holographic display, and optical remote sensing. This paper introduces the basics of optical scann...

In this work, using the scanning near-field optical fiber probe method, we carry out a direct observation of below-diffraction-limited optical spot induced by nonlinear saturable absorption characteristic of Ag-doped Si nanofilms. The experimental results indicate that the squeezed spot size decreases with laser power increase, and the smallest spot can be squeezed to 68% of the diffraction-lim...

This paper develops coding and signal processing approaches for a novel optical recording channel that arises from electron-trapping phosphor materials. The recording medium allows multiple reads and writes, and one important feature is that the read process serves to erase the disk. This feature would enable vendors of prerecorded video to provide customers with one-time services. For applicat...