Self-heating leads to a temperature rise of the laser diode and limits the output power and efficiency due to increased loss and decreased differential gain. To control device self-heating, it is required to design the laser structure with a low optical loss, while the heat flux must spread out of the device efficiently. In this study, a new asymmetric waveguide design is proposed and th...

1. Background 2. Residue number system 2.1. Encoding 2.2. Decoding 2.3. Scaling 3. Basis for numerical methods 4. Processor design concepts 4.1. Cyclic phase implementation 4.2. Mapping with beam position control 4.3. Multipurpose arithmetic module 5. Extended computing applications 5.1. Polynomial evaluation 5.2. Matrix multiplication and transforms 6. Concluding remarks 7. References Abstract...

We theoretically and numerically study the design of optical "lumped" nanofiltering devices in the framework of our recently proposed paradigm for optical nanocircuits. In particular, we present a design of basic filtering elements, such as low-pass, pass-band, stop-band, and high-pass lumped nanofilters, for use in optical nanocircuits together with more complex designs, such as multizero or m...

We present a compact optical design for a multireference Shack-Hartmann-based wavefront sensor (WFS) for multiconjugate adaptive optical systems. The key component of this WFS design is a field lenslet array that separates the exit pupil images in the sensing plane for all reference sources. An analytical method for WFS optical design is presented, and the optimal strategy for selecting optical...

Binary Optics: Binary (diffractive) optics uses computer-aided design (CAD) tools and verylarge-scale-integration (VLSI) electronic circuit manufacturing technology to create novel optical devices and to provide design freedom and new materials choices for optical elements. When combined with conventional (refractive) optical lens systems, binary optical systems cannot only provide athermalizat...

Real world engineering design projects require the cooperation of multidisciplinary design teams using sophisticated an powerful engineering tools. The individuals or the individual groups of the multidisciplinary design teams work in parallel and independently withthe different engineering tools which are located onthe different sites for often a long time. In order to ensure the coordination ...

Different protection and restoration mechanism is the most important feature of automatic switched optical network (ASON). Through testing 1356NT, which is an optical network planning and design tool of Alcatel-Lucent Company, this paper analyzes the restoration time and proposes the application strategy of different circuits. It is significant for the plan and design of ASON. Keywords-automati...

Many detailed studies ranging from networking to hardware as well as standardization activities over the last few years have advanced the performance of the elastic optical network. Thanks to these intensive works, the elastic optical network has been becoming feasible. This paper reviews the recent advances in the elastic optical network from the aspects of networking technology and hardware d...