Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2006-09-26
2006-09-26
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling structure
C385S043000, C385S039000
Reexamination Certificate
active
07113677
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: 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: 9311233 (1997-12-01), None
patent: 2002286952 (2002-10-01), None
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, p. 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
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