Photonics/Optics

General MACOS Interface for Modeling and Analysis for Controlled Optical Systems

The General MACOS Interface (GMI) for Modeling and Analysis for Controlled Optical Systems (MACOS) enables the use of MATLAB as a front-end for JPL’s critical optical modeling package, MACOS. MACOS is JPL’s in-house optical modeling software, which has proven to be a superb tool for advanced systems engineering of optical systems. GMI, coupled with MACOS, allows for seamless interfacing with modeling tools from other disciplines to make possible integration of dynamics, structures, and thermal models with the addition of control systems for deformable optics and other actuated optics.

Posted in: Briefs, Tech Briefs, Photonics, Analysis methodologies, Simulation and modeling, Computer software and hardware, Optics
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ASIC Readout Circuit Architecture for Large Geiger Photodiode Arrays

Commercial applications include 3D imaging, positron emission tomography (PET), laser ranging (LADAR), night vision, and surveillance.

The objective of this work was to develop a new class of readout integrated circuit (ROIC) arrays to be operated with Geiger avalanche photodiode (GPD) arrays, by integrating multiple functions at the pixel level (smart-pixel or active pixel technology) in 250-nm CMOS (complementary metal oxide semiconductor) processes. In order to pack a maximum of functions within a minimum pixel size, the ROIC array is a full, custom application-specific integrated circuit (ASIC) design using a mixed-signal CMOS process with compact primitive layout cells.

Posted in: Briefs, TSP, Photonics, Architecture, Integrated circuits, Optics
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Digital Imaging Systems for Ballistics Testing

Traditionally, the recording of ordnance proofing data has been split into two main areas: instrumentation and high speed photography. Instrumentation was more focused on the collection of analytical data from various instruments, e.g. Doppler radar, yaw screens (for pitch and yaw), and velocity traps (i.e. skyscreens or acoustic triggers), whereas high speed photography was more concerned with obtaining high quality images for later qualitative analysis. The photographic images were obtained using an assortment of high speed film cameras, often requiring a specialist photographic team to survey in, set up and align the camera, illuminate the subject, synchronise the camera to the firing system, process the film records and produce the final images for later manual analysis.

Posted in: Articles, Features, Photonics, Optics, Test equipment and instrumentation
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Photovoltaic Tracking Control Systems

Tracking systems are included in more than one-third of new photovoltaic developments in Europe, but less than 10% in the US. If properly controlled, they can capture more energy from each panel than fixed racks – up to 40% more in most parts of North America – so selecting the best hardware and the right control algorithm is critical to realizing optimum energy production and reliability.

Posted in: Application Briefs, Applications, Photonics, Optics, Hardware
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Blue Tunable Laser

New Focus™ (Santa Clara, CA) a Newport Corporation Brand, has introduced the Vortex™ Plus Blue TLB-6802 precision series, single-mode, finely-tunable laser. This is the world’s first precision tunable blue laser that operates at 461nm, the critical wavelength for next-generation atomic clocks that are currently being built by National Labs and other top research labs worldwide. The blue Vortex Plus replaces complex resonant second-harmonic generation, or SHG systems.

Posted in: Products, Products, Photonics
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Smart Camera

The In-Sight® 7000 smart camera from Cognex Corp. (Natick, MA) features a vision tool library; In-Sight measurement, location, and inspection vision tools; and the EasyBuilder® setup and deployment environment. The smart camera provides various model options, all with a tough metal IP67 package. Each includes acquisition speeds of more than 100 image captures per second. The device has the capability to power and control specialized lighting directly.

Posted in: Products, Products, Photonics
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Optical Matrix Switch

Polatis (Andover, MA) has introduced its Series 6000 Optical Matrix Switch — a non-blocking, all-optical single-mode fiber cross-connect for up to 192x192 fiber ports. The switch features less than 1dB typical optical loss. The Series 6000, based on Polatis’ patented DirectLight® optical switch technology, doubles the maximum matrix size previously available from Polatis.

Posted in: Products, Products, Photonics
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DC Cabling

Amphenol Industrial (Sidney, NY) has announced an active trunk and drop cabling product, in conjunction with Ampt (Fort Collins, CO), a designer of active electronics for photovoltaic (PV) solar modules.

Posted in: Products, Products, Photonics
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Machinable Glass Ceramic

MACOR® machinable glass ceramic from Goodfellow Corp. (Oakdale, PA) is machinable with ordinary metalworking tools rather than diamond grinding equipment. The rigid, radiation- resistant ceramic, which has a maximumuse temperature of 1000°C, has a low thermal conductivity, and can be highly polished. MACOR® machinable glass ceramic is available as rods, bars, sheets, and finished components.

Posted in: Products, Products, Photonics
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Fiber-Pigtailed Laser

Coherent (Santa Clara, CA) has expanded its OBIS family of plug-and-play smart laser modules with a new fiber-pigtailed (FP) option at several wavelengths, including 405nm, 488nm, and 640nm. The OBIS FP lasers are offered with 1 meter of single-mode, polarization-preserving fiber, terminating in a standard FC/APC connector. OBIS FP lasers achieve low noise and output stability due to two factors: an output beam with low beam drift to maintain efficient coupling, and telecom-type architecture and methods, such as laser welding to yield drift-free opto-mechanical coupling.

Posted in: Products, Products, Photonics
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