Double clad active optical fibers are widely used in fiber lasers and amplifiers. Fiber lasers
and amplifiers with a CW output power of up to several kilowatts have been demon strated …

An optical coupler for coupling light from at least two input fibers into one output fiber and a
method of fabricating and use of an optical coupler. The coupler comprises a) an input …

(52) US Cl........................................ 356,437; 250/330 A system is described that is suitable for
use in determining (58) Field of Classification Search................ 356/437; the location of leaks …

The location of gases that are not visible to the unaided human eye can be determined
using tuned light sources that spectroscopically probe the gases and cameras that can …

Apparatus and method for Suppressing modal instabilities (MI) in fiber-amplifier systems. In
some embodiments, ther mal effects drive the MI process, and in some such embodi ments …

US8538208B2 - Apparatus for coupling light between input and output waveguides -
Google Patents US8538208B2 - Apparatus for coupling light between input and output …

Composite optical waveguide structures or mode transformers and their methods of
fabrication and integration are disclosed, wherein the structures or mode transformers are …

BACKGROUND Optical fiber devices, such as optical fiberlasers and ampli fiers, that can
provide high output power as well as high beam quality, are of considerable commercial and …

The inventive optical fiber coupler array is capable of providing a low-loss, high-coupling
coefficient interface with high accuracy and easy alignment between a plurality of optical …

Appl. No.: 11/051,742(57)(22) Filed: Feb. 3, 2005 An improved fiber-optic communications
system comprises e as a multi-mode waveguide carrying an optical signal, a single (65) …