Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Patent
1994-10-17
1996-01-09
Lee, John D.
Optical waveguides
Optical fiber waveguide with cladding
Utilizing multiple core or cladding
385124, 385128, G02B 622
Patent
active
054836123
ABSTRACT:
An compound core optical waveguide fiber designed for high data rate or single channel or WDM systems which may include optical amplifiers. The waveguide is characterized by a core having two or three regions wherein the refractive index can be varied. The relative size of the regions may also be varied. By adjusting these variables, the desired mode field diameter, zero dispersion wavelength, dispersion slope and cut off wavelength were obtained. The optical properties are chosen to limit non-linear effects while maintaining low attenuation and acceptable bend performance. In addition, the residual stress within the waveguide is maintained at a low level to limit stress induced birefringence. The low residual stress in the uncoated waveguide, together with a dual coating system having selected moduli and glass transition temperatures results in low polarization mode dispersion.
REFERENCES:
patent: 4715679 (1987-12-01), Bhagavatula
Gallagher Daniel
Nolan Daniel A.
Smith David K.
Toler J. Richard
Watkins Grant P.
Chervenak William J.
Corning Incorporated
Lee John D.
Palmer Phan T. H.
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