Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2008-01-01
2008-01-01
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling structure
C385S043000, C385S039000
Reexamination Certificate
active
11505330
ABSTRACT:
The invention provides an optical modulator wherein appearance of radiation mode light can be suppressed to improve performances as a device. The optical modulator includes a multiplexing waveguide which in turn includes two input waveguides to which propagation lights from a linear waveguide are inputted, a waveguide coupling element, and two output waveguides. The width of the waveguide coupling element on the input side is greater than the total width of the two input waveguides, and the width of the waveguide coupling element on the output side is greater than the total width of the two output waveguides. The device of the present invention is applied typically to an optical communication system.
REFERENCES:
patent: 4087159 (1978-05-01), Ulrich
patent: 4983006 (1991-01-01), Nishimoto
patent: 5082341 (1992-01-01), Walker
patent: 5586209 (1996-12-01), Matsuura et al.
patent: 5799119 (1998-08-01), Rolland et al.
patent: 5862288 (1999-01-01), Tayag et al.
patent: 6668103 (2003-12-01), Hosoi
patent: 6842569 (2005-01-01), Thaniyavarn
patent: 2001/0053262 (2001-12-01), Kinoshita et al.
patent: 2002/0015561 (2002-02-01), Kawashima et al.
patent: 0651267 (1995-05-01), None
patent: 1525492 (1978-09-01), None
patent: 2239715 (1991-07-01), None
patent: 61-72207 (1986-04-01), None
patent: 9-178964 (1997-07-01), None
patent: 9311233 (1997-12-01), None
patent: 10-160951 (1998-06-01), None
patent: 10-260380 (1998-09-01), None
patent: 11-133364 (1999-05-01), None
patent: 2000-121857 (2000-04-01), None
patent: 2000-162454 (2000-06-01), None
patent: 2001-209018 (2001-08-01), None
patent: 2002286952 (2002-10-01), None
Q. Lai, et al. “Arbitrary Ratio Power Splitters Using Angled Silica on Silicon Multimode Interference Couplers,” Electronic Letters, vol. 32, No. 17, Aug. 15, 1996, p. 1576-1577.
Japanese Office Action mailed on Oct. 24, 2006 in corresponding Japanese Application No. 2002-140373.
Bachmann, et al., “General Self-Imaging Properties in N×N Multimode Interference Couplers Including Phase Relations”, Applied Optics, Jun. 20, 1994, vol. 33, No. 18, pp. 3905-3911.
Soldano, et al., “Planar Monomode Optical Couplers Based on Multimode Interference Effects”, Journal of Lightwave Technology, Dec. 1992, vol. 10, No. 12, pp. 1843-1849.
Soldano, et al., “Large Optical Bandwidth Of InGaAsP/InP Multi-Mode Interference 3-dB Couplers”, 6th European Conference on Integrated Optics, Apr. 18-22, 1993.
European Search Report dated Dec. 21, 2005 for corresponding application No. GB 0520648.7.
Doi Masaharu
Ishizaka Tetsuo
Miyawaki Shuuichi
Font Frank G.
Wong Eric
LandOfFree
Optical modulator, optical waveguide device 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 modulator, optical waveguide device and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical modulator, optical waveguide device and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3941761