Optical waveguides – With optical coupler – Particular coupling structure
Patent
1995-01-30
1996-09-24
Healy, Brian
Optical waveguides
With optical coupler
Particular coupling structure
385 14, 385 15, 385 40, 385 41, 385 42, 385 49, 385132, G02B 626
Patent
active
055599133
ABSTRACT:
An integrated optical proximity coupler comprises first and second parallel straight interaction waveguide segments. First and second end segments are connected to the input ends of the first and second straight waveguide segments, respectively, by means including first and second curved segments, respectively. The end segments are both the same predetermined size which is determined by conventional optical fibers to which they are to be connected. To make the device broad banded, one of the straight segments must be narrower than the other. To reduce device excess loss, the first straight segment and at least part of its respective curved segment are made slightly narrower than the end segments, and the second straight segment and at least part of its respective curved segment are made slightly wider than the end segments. Thus, the required .DELTA..beta. can be obtained without making the narrow path too narrow.
REFERENCES:
patent: 3850503 (1974-11-01), Riseberg et al.
patent: 5165001 (1992-11-01), Takagi et al.
Adar et al., "Adiabatic 3-db Couplers, Filters and Multiplexers made with Silica waveguidess waveguides on Silicon", Journ. of Lightwave Tech. vol. 10, No. 1, Jan. 1992, pp. 46-50.
Cai et al., "Analysis of the Coupling Characteristics of a Tapered Three-Guide Coupled System", Journal of Lightwave Tech., Vol. 8, No. 10, Oct. 1990, pp. 1621-1629.
Cai et al., "Analysis of the Coupling Characteristics of a Tapered Coupled waveguide System", Journal of Lightwave Tech., vol. 8, No. 1, Jan. 1990, pp. 90-98.
Okamura et al., "Characteristics of Guided-Wave Asymmetric Directional Coupler .. . "Proc. of the Eur. Conf. on Optical Comm. 1991, vol. 1, Sep. 1991, pp. 317-320.
Takagi et al., "Broadband Silica-Based Optical Waveguide Coupler with Asymmetric Structure", Electronics Lett., Vol. 26, No. 2, Jan. 1990, pp. 132-133.
Takagi et al., "Wavelength Characteristics of (2.times.2) Optical Channel-Type Directional Couplers . . . "Journal of Lightwave Tech. vol. 10, No. 6, Jun. 1992, pp. 735-745.
Corning Incorporated
Healy Brian
Simmons, Jr. William J.
LandOfFree
Broadband integrated optical proximity coupler does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Broadband integrated optical proximity coupler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Broadband integrated optical proximity coupler will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1946837