| Presentation | 1999/1/22 Study of the optical band pass filter Designs of dielectric multi-layered Filma for DWDM system F. Matsumura, Y. Fujii, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recent developments of DWDM optical communication systems show great progress.In these systems, the band pass optical filters, which have the pass band width of 0.8nm and the cross talk of less than-50dB, are used.Such a band pass optical filters were realized with dielectric multi-layered films which have more than 3 cavity for optical resonator.But, in the production of these optical filters, very accurate film thickness control, which is less than 1/100000, is requisite.On the other hand, the optical filters, which are composed from two 3 cavity band pass optical filters and piled, show the film thickness accuracy of more than 5/100000 and the cross talk of less than-50dB.Also these band pass optical filters keep the pass band width of more than 50% for the pass band width of 4 cavity band pass filter at 90% transmission pass band width and the pass band width of more than 100% for the same filter at 50% transmission pass band width. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DWDM system / Dielectric multi-layered optical filter / Band pass optical filter / Cross talk / Cavity of resonator / Film thickness accuracy |
| Paper # | EMD98-83 |
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| Conference Information | |
| Committee | EMD |
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| Conference Date | 1999/1/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Electromechanical Devices (EMD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study of the optical band pass filter Designs of dielectric multi-layered Filma for DWDM system |
| Sub Title (in English) | |
| Keyword(1) | DWDM system |
| Keyword(2) | Dielectric multi-layered optical filter |
| Keyword(3) | Band pass optical filter |
| Keyword(4) | Cross talk |
| Keyword(5) | Cavity of resonator |
| Keyword(6) | Film thickness accuracy |
| 1st Author's Name | F. Matsumura |
| 1st Author's Affiliation | Central Research Laboratories, TOYO Communication Equipment Co., Ltd.() |
| 2nd Author's Name | Y. Fujii |
| 2nd Author's Affiliation | College of Science and Technology, Nihon University |
| Date | 1999/1/22 |
| Paper # | EMD98-83 |
| Volume (vol) | vol.98 |
| Number (no) | 554 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |