Claims
- 1. A device comprising tin-phosphorous oxyfluoride glass which has been exposed to light for a time sufficient to change the refractive index of the glass.
- 2. The device of claim 1, wherein the light is shorter in wavelength than the absorption edge of the glass.
- 3. The device of claim 2, wherein the tin-phosphorous oxyfluoride glass has a composition which comprises, in weight percent on an elemental basis as calculated from the batch, about 20-85% Sn, 2-20% P, 3-20% O, 9-36% F, and at least 60% total of Sn+P+O+F.
- 4. The device of claim 3, wherein the tin-phosphorous oxyfluoride glass has a composition which comprises, in weight percent on an elemental basis as calculated from the batch, about 20-60% Sn, 9-20% P, 10-20% O, 9-20% F, and at least 60% total of Sn+P+O+F.
- 5. The device of claim 4, wherein the tin-phosphorous oxyfluoride glass has a composition consisting essentially of, in weight percent on an elemental basis as calculated from the batch, about 20-60% Sn; 9-20% P; 10-20% O; 9-20% F; 0-40% total cation modifiers selected in the indicated proportions from the group consisting of about up to 12% Pb, up to 12% Zr, up to 5% Ca, up to 8% Ba, up to 5% Zn, up to 30% Ti, up to 7% Nb, up to 5% Ga, up to 5% Hg, and up to about 4% total alkalis; and up to about 20% total of anion modifiers selected from the group consisting of Cl, Br and I.
- 6. The device of claim 4, wherein the light is shorter than about 350 nm.
- 7. The device of claim 6, wherein the device includes an optical waveguide region.
- 8. The device of claim 6, wherein the device includes a diffraction grating.
- 9. The device of claim 8, wherein the device is in planar form.
- 10. The device of claim 8, wherein the device is in fiber form.
- 11. The device of claim 4 further comprising an optically nonlinear organic dye dopant and a periodic grating structure that is tunable depending on incident light intensity.
- 12. A method of making a device comprising the steps of exposing a tin-phosphorous oxyfluoride glass to light for a time sufficient to induce a refractive index change in the glass.
- 13. The method of claim 12, wherein the light is shorter in wavelength than the absorption edge of the glass.
- 14. The method of claim 13, wherein the tin- phosphorous oxyfluoride glass has a composition which comprises, in weight percent on an elemental basis as calculated from the batch, about 20-60% Sn, 9-20% P, 10-20% O, 9-20% F, and at least 60% total of Sn+P+O+F.
- 15. The method of claim 14, wherein the tin-phosphorous oxyfluoride glass has a composition consisting essentially of, in weight percent on an elemental basis as calculated from the batch, about 20-60% Sn; 9-20% P; 10-20% O; 9-20% F; 0-35% total cation modifiers selected in the indicated proportions from the group consisting of about up to 12% Pb, up to 12% Zr, up to 5% Ca, up to 8% Ba, up to 5% Zn, up to 30% Tl, up to 7% Nb, up to 5% Ga, up to 5% Hg, and up to about 4% total alkalis; and up to about 20% total of anion modifiers selected from the group consisting of Cl, Br and I.
- 16. The method of claim 14, wherein the light is shorter than about 350 nm.
- 17. The method of claim 13, further comprising the step of exposing the glass to an optical interference pattern.
- 18. The method of claim 13 further comprising the step of selectively masking the glass to produce a periodic pattern in the glass.
- 19. The method of claim 13 further comprising the step of forming an optical waveguide structure comprising a core and a cladding.
- 20. The method of claim 19 further comprising the step of forming the glass into a fiber.
Parent Case Info
This application is a 371 of PCT/US98/19963 filed Sep. 25, 1998which claims benefit of Prov. No. 60/060,845 filed Oct. 2, 1997.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/US98/19963 |
|
WO |
00 |
3/23/2000 |
3/23/2000 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/18042 |
4/15/1999 |
WO |
A |
US Referenced Citations (7)
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/060845 |
Oct 1997 |
US |