Optical: systems and elements – Optical modulator – Having particular chemical composition or structure
Patent
1996-10-08
1998-04-14
Ben, Loha
Optical: systems and elements
Optical modulator
Having particular chemical composition or structure
359275, 525478, 528 15, G02F 100
Patent
active
057399484
ABSTRACT:
A refractive index modulation element made of a refractive index modulation material. The refractive index can be thermally modulated. The refractive index modulation material can be a silicone resin represented by the following formula R.sub.n SiO.sub.(4--n)/2,where the average value of n is 0.5 to 3 and where K is an aliphatic or aromatic group with 1 to 18 carbon atoms or other functional group. The silicone resin has a spectral transmission factor that on average is higher than 80%, within the wavelength range of 350 nm to 1,600 nm, and a refractive index temperature dependence of -0.001/.degree.C. to -0.00005/.degree.C.
REFERENCES:
patent: 5239406 (1993-08-01), Lynam
patent: 5355245 (1994-10-01), Lynam
Electronics Letters, vol. 24, No. 8, Apr. 14, 1988.
Applied Optics, vol. 25, No. 21, Nov. 1, 1986.
Patent Abstracts of Japan, vol. 017, No. 387, Jul. 20, 1993.
Kushibiki Nobuo
Nishida Fumito
Ogawa Takuya
Suzuki Toshio
Ben Loha
Bittell James E.
Dow Corning Asia Ltd.
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