Patent
1979-11-23
1981-11-24
Levy, Stewart J.
350 9615, G02E 101
Patent
active
043020712
ABSTRACT:
A coupler for coupling a light signal traveling in a light conducting core of one light waveguide into the light conducting core of a second waveguide with an adjustable ratio of the amount of coupling therebetween characterized by a pair of support members for mounting the waveguides in a fixed position along a coupling segment with the waveguides substantially parallel and being embedded in a medium with an index of refraction which is lower in comparison to the index of refraction of the cores, each of the support members being mounted for relative movement to each other from a first position with the waveguides in alignment with each other to a second position with the waveguides separated and displaced from each other and a device for moving the support members between the positions in the prescribed amounts to change the ratio of the light signal coupled from one waveguide to the other waveguide. Preferably the waveguides, which may be either optical fibers or strip waveguides, are disposed adjacent flat planar surfaces of the support and the device for moving may be a piezoelectric device that either shifts the support members between the first and second positions in a direction extending parallel to the plane of the surfaces so that a lateral offset occurs between the waveguides when in the second position or moves the members apart to separate the waveguides.
REFERENCES:
patent: 4135779 (1979-06-01), Hudson
patent: 4136929 (1979-01-01), Suzaki
patent: 4176908 (1979-12-01), Wagner
T. Ozeki et al., "Optical Directional Coupler Using Tapered Sections in Multimade Fibers", Appl. Phys. Letts., vol. 28, No. 9, May 1975, pp. 528-529.
B. S. Kawasaki et al.: "Low-Loss Access Coupler . . . " Applied Optics, vol. 16, No. 7, Jul. 1977, pp. 1794-1795.
A. Jones, "Coupling of Optical Fibers and Scattering in Fibers", Journal of Optical Soc. of Amer., vol. 55, No. 3, Mar. 1965, pp. 261-271.
D. Kendall, "On Etching Very Narrow Grooves in Silicon," Appl. Phys. Lett., vol. 26, No. 4, Feb. 1975, pp. 195-198.
Levy Stewart J.
Siemens Aktiengesellschaft
LandOfFree
Adjustable directional coupler for light waveguides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable directional coupler for light waveguides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable directional coupler for light waveguides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2171632