TW428113B - Dense wavelength division multiplexer (DWDM) apparatus - Google Patents
Dense wavelength division multiplexer (DWDM) apparatusInfo
- Publication number
- TW428113B TW428113B TW88113314A TW88113314A TW428113B TW 428113 B TW428113 B TW 428113B TW 88113314 A TW88113314 A TW 88113314A TW 88113314 A TW88113314 A TW 88113314A TW 428113 B TW428113 B TW 428113B
- Authority
- TW
- Taiwan
- Prior art keywords
- wave guide
- refraction index
- arrayed
- dwdm
- division multiplexer
- Prior art date
Links
Abstract
A dense wavelength division multiplexer (DWDM) used for optical-fiber communication includes two star couplers and an arrayed wave guide grating element, wherein the arrayed wave guide grating element is composed of plural wave guides. Doping Ge, B, P, TiO2 or F etc. on every wave guide to make the refraction index of the middle specific zone of the wave guide differ from the refraction index of the head and tail zones so as to eliminate the superfluous side envelope on the optical spectrum and increase the isolation degree of the wave guide frequency spectrum by 3 to 5 dB to contract the size of wave guide. By the modulation of the refraction index of the wave guide it can shift the center wavelength of the wave guide such that arrayed wave guide grating elements with different characteristics can be flexibly made without changing the design of the planar integrated waveguide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW88113314A TW428113B (en) | 1999-08-04 | 1999-08-04 | Dense wavelength division multiplexer (DWDM) apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW88113314A TW428113B (en) | 1999-08-04 | 1999-08-04 | Dense wavelength division multiplexer (DWDM) apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
TW428113B true TW428113B (en) | 2001-04-01 |
Family
ID=21641787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW88113314A TW428113B (en) | 1999-08-04 | 1999-08-04 | Dense wavelength division multiplexer (DWDM) apparatus |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW428113B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112880929A (en) * | 2021-04-07 | 2021-06-01 | 西北工业大学 | Rapid automatic detection method for air tightness of aviation complex pipeline |
-
1999
- 1999-08-04 TW TW88113314A patent/TW428113B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112880929A (en) * | 2021-04-07 | 2021-06-01 | 西北工业大学 | Rapid automatic detection method for air tightness of aviation complex pipeline |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent | ||
MM4A | Annulment or lapse of patent due to non-payment of fees |