Apparatus and methods for launching an optical signal into...

Details Apparatus and methods for launching an optical signal into... Apparatus and methods for launching an optical signal into...

2007-06-05

2007-06-05

Song, Sarah (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

Reexamination Certificate

active

11035735

ABSTRACT:
The launch conditions (injected beam size/shape, radial/angular offset from the multimode fiber axis) may be varied to preferentially excite certain transverse modes of multimode optical fiber. To reduce multimode dispersion in the fiber, modes are excited having smaller amplitudes near fiber index defects. Launch conditions may be controlled using a substrate with grooves for launching and receiving fibers, a planar waveguide formed on a substrate along with a groove for aligning the multimode fiber and waveguide, or free-space optical components. A waveguide may provide the desired injected beam size/shape. Spatially selective material processing enables accurate alignment of the groove(s) (and hence the fiber(s) therein), yielding the desired radial/angular offsets. Radial and azimuthal angular offset launch may be employed for constructing an optical mode conditioner, a transmit optical subassembly (TOSA), and other optical devices, assemblies, and subassemblies that launch an optical signal into a multimode optical fiber.

REFERENCES:
patent: 4164364 (1979-08-01), Witte
patent: 5416862 (1995-05-01), Haas et al.
patent: 6501884 (2002-12-01), Golowich et al.
Johnson, Eric G. et al; Light Coupling by a Vortex Lens into Graded Index Fiber; J Lightwave Technology vol. 19 No. 5 p. 753 (May 2001).

Affiliated with

Also associated with

Rating

Apparatus and methods for launching an optical signal into... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and methods for launching an optical signal into..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and methods for launching an optical signal into... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3815566