초록

The present invention generally relates to an interference filter including a glass substrate, useful in fiber optic systems.

대표청구항 ▼

1. A glass comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 3 , R = Al, B, La and REwherein RE represents rare earth ions, excluding La. 2. A glass according to claim 1, having the following properties: d −7 /° C. 3. A glass according

1. A glass comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 3 , R = Al, B, La and REwherein RE represents rare earth ions, excluding La. 2. A glass according to claim 1, having the following properties: d −7 /° C. 3. A glass according to claim 1, comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 3 , R = Al, B, La and RE 4. A glass according to claim 3, having th following properties: d −7 /° C. 5. A glass comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 5 2 O 3 , R = Al, B, La, and RE 2 O 3 wherein RE represents rare earth ions, excluding La. 6. A glass according to claim 5, having the following properties: d +7 /° C. 7. A glass according to claim 5 comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 5 2 O 3 , R = Al, B, La, and RE 2 O 3 8. A glass according to claim 7, having the following properties: d −7 /° C. 9. A glass comprising: 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 2 O 5 2 O 3 + La 2 O 3 + Y 2 O 3 2 O 3 wherein RE represents rare earth ions, excluding La. 10. A glass according to claim 9, having the following properties: d −7 /° C. 11. A glass according to claim 9, comprising: 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 2 O 5 2 O 3 + Gd 2 O 3 + Y 2 O 3 2 O 3 12. A glass according to claim 11, having the following properties: d −7 /° C. 13. An interference filter comprising a glass substrate having at least two interference layers coated thereon, wherein the glass substrate is a glass according to claim 1. 14. An interference filter comprising a glass substrate having at least two interference layers coated thereon, wherein the glass substrate is a glass according to claim 5. 15. An interference filter comprising a glass substrate having at least two interference layers coated thereon, wherein the glass substrate is a glass according to claim 9. 16. A fiber optic system comprising a light source, a fiber optic transmission component, a receiver of transmitted radiation and an interference filter comprising a glass substrate having at least two interference layers coated thereon, said glass substrate comprising a glass according to claim 1. 17. A fiber optic system comprising a light source, a fiber optic transmission component, a receiver of transmitted radiation and an interference filter comprising a glass substrate having at least two interference layers coated thereon, said glass substrate comprising a glass according to claim 5. 18. A fiber optic system comprising a light source, a fiber optic transmission component, a receiver of transmitted radiation and an interference filter comprising a glass substrate having at least two interference layers coated thereon, said glass substrate comprising a glass according to claim 9. 19. A process for making a glass according to claim 1, comprising melting raw materials corresponding to oxides in the glass, refining a resultant glass melt, casting the melt in a mold and optionally annealing. 20. A process for making a glass according to claim 1, comprising casting into a mold a glass melt produced from raw materials corresponding to oxides in the glass. 21. A process for making a glass according to claim 5, comprising casting into a mold a glass melt produced from raw materials corresponding to oxides in the glass. 22. A process for making a glass according to claim 9, comprising casting into a mold a glass melt produced from raw materials corresponding to oxides in the glass. 23. A demultiplexing optical component comprising the interference filter of claim 13. 24. A demultiplexing optical component comprising the interference filter of claim 14. 25. A demultiplexing optical component comprising the interference filter of claim 15. 26. A method of d emultiplexing, comprising passing an optical signal of multiple wavelengths through a demultiplexing optical component according to claim 23. 27. A method of demultiplexing, comprising passing an optical signal of multiple wavelengths through a demultiplexing optical component according to claim 24. 28. A method of demultiplexing, comprising passing an optical signal of multiple wavelengths through a demultiplexing optical component according to claim 25. 29. A glass comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 3 , R = Al, B, La and REwherein RE represents rare earth ions, excluding La. 30. A glass according to claim 1, comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 3 , R = Al, B, La and RE 31. A glass comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 5 2 O 3 , R = Al, B, La, and RE 2 O 3 wherein RE represents rare earth ions, excluding La. 32. A glass according to claim 5 comprising: 2 2 2 O 3 2 O 3 2 O 2 O 2 O 2 2 2 O 3 2 O 3 2 O 3 2 O 3 2 O 5 2 O 3 , R = Al, B, La, and RE 2 O 3