Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2005-05-10
2005-05-10
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
Reexamination Certificate
active
06892004
ABSTRACT:
An optical coupling arrangement has a first transition region having a plurality of first segmented waveguides and a plurality of transverse segments of alternating indices of refraction with at least some of the transverse segments traversing the first segmented waveguides. The first segmented waveguides are formed by core segments in some of the transverse segments. The arrangement may also have a second transition region having a plurality of second segmented waveguides each aligned with a respective one of the first segmented waveguides. The arrangement is manufactured with a high production yield and is used in an optical coupling device for combining/splitting optical signals to reduce the insertion loss. The optical coupling device is also used in other devices such as Mach-Zehnder devices and arrayed waveguide grating demultiplexers/multiplexers.
REFERENCES:
patent: 4904042 (1990-02-01), Dragone
patent: 5577141 (1996-11-01), Adar et al.
patent: 5745618 (1998-04-01), Li
patent: 5745619 (1998-04-01), Li et al.
patent: 5914972 (1999-06-01), Siala et al.
patent: 6229947 (2001-05-01), Vawter et al.
patent: 20020061045 (2002-05-01), Zhang et al.
patent: 20020094166 (2002-07-01), Weerden et al.
patent: 2368945 (2003-07-01), None
“2-D Mode Tapering Via Tapered Channel Waveguide Segmentation”; Electronics Letters; Jul. 30, 1992; vol. 28; No. 16; pp. 1514-1516.
“Analysis of periodically Segmented Waveguide Mode Expanders”; Z. Weissman and I. Hendel; Journal of Lightwave Technology; vol. 13; No. 10; Oct. 1995; pp. 2053-2058.
“Very Low Insertion Loss Arrayed-Waveguide Grating with Vertically Tapered Waveguides”; A. Sugita, Member, IEEE, A. Kaneko, K. Okamoto, Member, IEEE, M. Itoh, A. Himeno, and Y. Ohmori, Member, IEEE; IEEE Photonics Technology Letters; vol. 12; No. 9; Sep. 2000; pp. 1180-1182.
“New Design for Low-Loss Star Couplers and Arrayed Waveguide Grating Devices”; Joonoh Park, Youngchul Chung, Soohyun Baek, and Hyung-Jong Lee; IEEE Photonics Technology Letters; vol. 14; No. 5; May 2002; pp. 651-653.
“Low-Loss Arrayed Waveguide Grating with High Index Regions at Slab-to-Array Interface”; K. Maru, T. Chiba, M. Okawa, H. Ishikawa, K. Ohira, S. Sato and H. Uetsuka; Electronics Letters; Oct. 11, 2002; vol. 37; No. 21; pp. 1287-1289.
“Modes of Periodically Segmented Waveguides”; Z. Weissman and A. Hardy, Senior Member, IEEE; Journal of Lightwave Technology; vol. 11; No. 11; Nov. 1993; pp. 1831-1838.
LandOfFree
Optical coupling arrangement having low coupling loss and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical coupling arrangement having low coupling loss and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical coupling arrangement having low coupling loss and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3446374