Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2008-03-11
2008-03-11
Healy, Brian (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling structure
C385S044000, C385S045000, C385S046000, C385S048000, C385S050000, C385S028000, C385S051000
Reexamination Certificate
active
07343070
ABSTRACT:
A 1×2 splitter design having low loss is described. The splitter has a non-adiabatic tapered waveguide (22) connected between a substantially single-mode input waveguide (20) and two output waveguides (24, 26). The non-adiabatic tapered waveguide widens in width towards the output waveguide, and merges substantially continuously with the input waveguide in a direction parallel to the optical axis of the input waveguide. This keeps radiation mode generation to a minimum which, in turn, keeps insertion loss low. In the described embodiment, the non-adiabatic taper shape is based on a perturbed cosine function. The 1×2 splitter can be cascaded with other such splitters in order to build a 1×2N splitter design.
REFERENCES:
patent: 5629992 (1997-05-01), Amersfoort et al.
patent: 5745619 (1998-04-01), Li et al.
patent: 6069990 (2000-05-01), Okawa et al.
patent: 6169838 (2001-01-01), He et al.
patent: 6222956 (2001-04-01), Akiba et al.
patent: 6222966 (2001-04-01), Khan et al.
patent: 6236784 (2001-05-01), Ido
patent: 6463188 (2002-10-01), Takahashi et al.
patent: 6515776 (2003-02-01), Naganuma
patent: 6526203 (2003-02-01), Gonzalez et al.
patent: 6549688 (2003-04-01), Bazylenko
patent: 6563988 (2003-05-01), McGreer
patent: 6625187 (2003-09-01), Ikoma et al.
patent: 6633703 (2003-10-01), Katayama
patent: 6643432 (2003-11-01), Bouda
patent: 6728438 (2004-04-01), Kwang Bae
patent: 6768842 (2004-07-01), Bulthuis et al.
patent: 6888985 (2005-05-01), Hosoi
patent: 6892008 (2005-05-01), Singh et al.
patent: 2002/0114572 (2002-08-01), Bouda
patent: 2002/0159703 (2002-10-01), McGreer
patent: 2005/0207705 (2005-09-01), Laurent-Lund
patent: 101 21 007 (2002-11-01), None
patent: 0 444 817 (1997-04-01), None
patent: 0 811 860 (1997-12-01), None
patent: 0 881 512 (1998-12-01), None
patent: 2 368 131 (2002-04-01), None
patent: 09297228 (1997-11-01), None
patent: 2001-13336 (2001-01-01), None
patent: WO 02/101435 (2002-12-01), None
patent: WO 02/103423 (2002-12-01), None
Lorenzo et al: “Improved Self-Imaging Characteristics in 1×N Multimode Couplers”, IEEE Proceedings: Optoelectronics, Institution of Electrical Engineers, Stevenage, GB, vol. 145, No. 1, Feb. 1998, pp. 65-69, ISSN: 1350-2433 figure 1.
Keh-Yi Lee et al: “New Type of 1×3 MMI Optical Power Dividers with Reverse Taper Section”, Journal of Optical Communications, 24 (2003) 1, 31-34, XP009019114, figure 1.
Krueger et al: “Design and Realisation of a Novel Polymer-based Singlemode Integrated-Optical Beam Splitter”, MOEMS & Miniaturized Systems, Santa Clara, CA USA, Sep. 18-20, 2000 vol. 4178, pp. 77-87, XP-002257830, Proceedings of SPIE—The International Society for Optical Engr., 2000, SPIE-Int. Soc. Opt. Eng. USA ISSN: 0277-786X.
Zirngibl: “Efficient 1×16 Optical Power Splitter Based on InP”, Electronics Letters Jun. 18, 1992, vol. 28 No. 13, pp. 1212-1213, XP000301390, ISSN: 0013-5194, figure 1.
Marz, Reinhard, “Integrated Optics, Design and Modeling,” International Standard Book No. 0-89006-668-X, 1995.
Van Der Vliet Frederick Marcel
Van Weerden Harm
Anderson Guy G
Gemfire Europe Limited
Haynes Beffel & Wolfeld LLP
Healy Brian
Wolfeld Warren S.
LandOfFree
Optical splitter with tapered multimode interference waveguide 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 splitter with tapered multimode interference waveguide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical splitter with tapered multimode interference waveguide will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2803099