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2 edition of Semiconductor laser diode to single-mode fibre coupling using discrete and micro-lenses found in the catalog.

Semiconductor laser diode to single-mode fibre coupling using discrete and micro-lenses

Joseph John

Semiconductor laser diode to single-mode fibre coupling using discrete and micro-lenses

by Joseph John

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  • 40 Currently reading

Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D.) - University of Birmingham, School of Electronic and Electrical Engineering.

Statementby Joseph John.
ID Numbers
Open LibraryOL20916082M

Applications. laser Doppler anemometer. Instrumentation AML Finite Element Methods: in two-phase flows. Recent developments. 4 credits () AML Engineering Mathematics & Method of weighted residuals and variational Mechanics: 3 credits () approach for solving differential equations. Using the mathematical analysis, it can be demonstrated that temperature distribution equation is: K2 Tw K1. x cos K1 1 T a L K1 cos 2 (28) Analytical and Experimental Investigation About Heat Transfer of Hot-Wire Anemometry

"New method to control chirp and wavelength of fibre Bragg gratings for multichannel chromatic dispersion compensation", in Colloquium on Optical Fibre Gratings, IEE Ref., /, pp. 18//3, London (). Kashyap R., Maxwell G. D., and Ainslie B. J., "Laser-trimmed four-port bandpass filter fabricated in single-mode photosensitive Ge. WDM TECHNOLOGIES: PASSIVE OPTICAL COMPONENTS Unlike most of the available textbooks on optical fiber communication. Volume II covers several key passive optical components and their key technologies, from the standpoint of WDM-based application.

Home; Do-It-Yourself tools; Power tools; An Automated Micro-Grinding System for the. Beam-guidance optics for high-power fiber laser systems. NASA Astrophysics Data System (ADS) Mohring, Bernd; Tassini, Leonardo; Protz, Rudolf; Zoz, Jürgen. The realization of a high-energy laser weapon system by coupling a large number of industrial high-power fiber lasers is investigated. To perform the combination of the individual beams of the different fiber lasers .


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Semiconductor laser diode to single-mode fibre coupling using discrete and micro-lenses by Joseph John Download PDF EPUB FB2

A laser diode module using the proposed circuit was also fabricated with high coupling efficiency into the single-mode fiber, and good reproducibility. A double ball lens coupling scheme has been designed. The efficiency of the coupling has been tested.

The effect of the lateral and transversal offset on the coupling efficiency has been investigated. Two spherical lenses based on As2S3 and As2Se3 have been used to this purpose. We used a Roithner RLTMG 5 mW single mode laser diode as by: 5.

Coupling of a Laser Diode to Single-Mode Fiber with an Upside-Down Tapered Lens End Article (PDF Available) in Applied Optics 38(30) November. KEYWORDS: Spectroscopy, Laser applications, Semiconductor lasers, Laser stabilization, Diodes, Fiber couplers, Optical isolators, Laser systems engineering Read Abstract + This work reports on a compact and robust single-frequency laser emitting at nm, for industrial metrology applications.

A low loss degrees coupling fiber socket making use of low bending loss hole-assisted fiber. A compact integrated green-light source by second harmonic generation of a GaAs distributed feedback laser diode.

Tekin; Single mode field analysis and adjustment on polymer waveguides understanding the reasons for coupling losses. A maximum responsivity of A/W at a bias of 7 V has been obtained which corresponded to a maximum butt coupled efficiency of 59% from a single mode fibre at μm which – taking into account a coupling efficiency from the fibre to the semiconductor device of no more than 20% – results in an internal QE of η int ∼%.

Figure 1A and B show a schematic diagram of single-mode fiber-to-laser chip coupling and an example of a packaged device, respectively.

Although it is possible to use lenses and other discrete optical components between the fiber and the PIC chip to improve the optical coupling characteristics, we mainly focus on the direct end-fire coupling.

Optical technology is already used in optical interconnection cables called Active Optical Cables (AOCs) for rack-to-rack communication, either in a short range between adjacent racks or between racks in different rooms of the data center, as illustrated in the indicative floor plan of Fig.

The floor plan shows how the data center can scale, depending on the service provider Cited by: 1. Find Optical Cavity related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Optical Cavity information.

I thought the laser diode was lost until I looked at 60x. This is the photo diode at 60x. This is the laser diode at 60x from the front. The two lines are for alignment and are about inch apart. Here is a picture of the Laser Diode and the pin it used to conect to.

The wire hanging on the pin was soldered to the laser diode. The essence of the invention was its ability to transfer charge from one area storage capacitor on the surface of a semiconductor to the next. In a CCD camera, these capacitors are exposed to light and they collect photo electrons through the photoelectric effect––in which a photon is converted into an electron.

Full text of "NASA Technical Reports Server (NTRS) NASA Tech Briefs, June Vol No. 6" See other formats. As well as demonstrating high power pulsed and CW 2µm fibre lasers, the consortium has developed critical components including the active fibre, acousto-optic modulators, fibre combiners and couplers.

+1 [email protected] #PhotonicsEurope 13 INDUSTRY EVENTS Homogenisation and Shaping of Laser and LED. Schlosser, Peter J. and Parrotta, Daniele C. and Savitski, Vasili G. and Kemp, Alan J. and Hastie, Jennifer E. Intracavity Raman conversion of a red semiconductor disk laser using diamond.

Optics Express, 23 (7). ISSN Main fields of application are micro lenses, diffractive optical elements (DOE), gratings, and single-mode or multi-mode waveguides. New developments in NIL- and hybrid polymers will be. FLC supplies CW single mode and broad area laser diodes (nm to 12um with 1mWW), pulse IR laser diodes, super luminescent diodes in nm - nm wavelength range in free space and fiber-coupled packages, high-power laser diode arrays with fiber output (2WW) CW and QCW, laser diode modules with high-quality glass optic, red, green.

In our system we proposed two channel photodetector in Young interferometer using He-Ne laser as a source of light. The measurement itself is relative to the measurement using a CCD camera, less time consuming and does not require the use of complex algorithms. This is a completely new tool for phase measurements adapted for liquid crystal.

AIL02 Unusual Higher Order Coupling in Piezoelectric and Ferroelectric Materials W.S. OATES, Department of Mechanical Engineering Florida A&M/ Florida State University, Tallahassee, FL, USA Piezoelectricity is often described to be proportional to the polarization of a solid; however, Martin (Phys.

Rev. B, v.5(4), ) has illustrated. Efficient long period fiber gratings inscribed with femtosecond pulses and an amplitude mask Heck, M.; Krämer, R.G.; Ullsperger, T.; Goebel, T.A.; Richter, D.

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