Broadband single-mode optical coupler

Details Broadband single-mode optical coupler Broadband single-mode optical coupler

1990-02-13

1991-05-28

Lee, John D.

350 9611, 350 9612, 350 9619, G02B 626

Patent

active

050188143

ABSTRACT:
An apparatus for coupling light waves into a single-mode planar waveguide comprises a curved multi-mode waveguide. The multi-mode waveguide is thick so that its mode structure is practically continuous and its coupling wavelength selectivity is low. The curved multi-mode waveguide presents a variable single-mode coupling gap to the adjacent single-mode planar waveguide which achieves optimum balance between phase and amplitude conditions for coupling a broad range of wavelengths and tolerates varying wavelength light sources.

REFERENCES:
patent: 3912363 (1975-10-01), Hammer
patent: 4021097 (1977-05-01), McMahon
patent: 4630885 (1986-12-01), Haavisto
patent: 4775214 (1988-10-01), Johnson
patent: 4869567 (1989-09-01), Millar et al.
patent: 4881791 (1989-11-01), Mallinson et al.
patent: 4915468 (1990-04-01), Kim et al.

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