Single-mode waveguide structure for optoelectronic integrated ci

Details Single-mode waveguide structure for optoelectronic integrated ci Single-mode waveguide structure for optoelectronic integrated ci

1995-12-29

1997-12-30

Healy, Brian

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

385 14, 385 28, 385129, 385131, 437 51, G02B 610, H01L 2170

Patent

active

057039895

ABSTRACT:
An optical waveguide for use in an optoelectronic integrated circuit and the associated method of manufacturing such a waveguide. The waveguide is formed by the successive layering of varied waveguide materials on a III-V semiconductor substrate, thereby producing a slab waveguide. The various layers within the slab waveguide are relatively thick, thereby producing a slab waveguide that is sized to be more compatible with an optical fiber and therefore more readily coupled to an optical fiber. The larger slab waveguide structure broadens the fundamental mode of the optical signal. However, multiple modes are also produced in the thicker slab waveguide that include higher order modes. A ridge structure is etched into the slab waveguide, wherein the width and height of the ridge structure are selected to impose lateral confinements on the higher order slab modes. The result is a waveguide that has a broadened fundamental mode yet is essentially single-mode. The resulting broadened fundamental mode is closer in symmetry to the mode of standard optical fibers, thereby enabling the waveguide to be more efficiently coupled to an optical fiber.

REFERENCES:
patent: 5078516 (1992-01-01), Kapon et al.
patent: 5165105 (1992-11-01), Haase et al.
patent: 5206925 (1993-04-01), Nakazawa et al.
patent: 5237639 (1993-08-01), Kato et al.
patent: 5278926 (1994-01-01), Doussiere
patent: 5303319 (1994-04-01), Ford et al.
patent: 5311539 (1994-05-01), Behfar-Rad et al.
patent: 5319727 (1994-06-01), Ford et al.
patent: 5468689 (1995-11-01), Cunningham et al.
patent: 5490226 (1996-02-01), Nelson
Large Singe-Mode Rib Waveguides in GeSi-Si and Si-on-SiO2, Richard A. Soref, et al., IEEE Journal of Quantum Electronics, vol. 27 No. 8, Aug. 1991, pp. 1971-1974.
Antiresonant Reflecting Optical Waveguides in SiO.sub.2 -Si Multilayer Structures, M. A. Duguay, et al., American Institute of Physics (1986), pp. 13-15.
Antiresonant Reflecting Optical Waveguides For III-V Integrated Optics, Koch, et al., Electronics Letters, Feb. 26, 1987, vol. 23 No. 5, pp. 244-245.

Affiliated with

Also associated with

Rating

Single-mode waveguide structure for optoelectronic integrated ci does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single-mode waveguide structure for optoelectronic integrated ci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-mode waveguide structure for optoelectronic integrated ci will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-210796