TW200720636A - Apparatus for detecting breaking of fiber-optic closed loop for a passive optical network (PON) system - Google Patents
Apparatus for detecting breaking of fiber-optic closed loop for a passive optical network (PON) systemInfo
- Publication number
- TW200720636A TW200720636A TW094140749A TW94140749A TW200720636A TW 200720636 A TW200720636 A TW 200720636A TW 094140749 A TW094140749 A TW 094140749A TW 94140749 A TW94140749 A TW 94140749A TW 200720636 A TW200720636 A TW 200720636A
- Authority
- TW
- Taiwan
- Prior art keywords
- fiber
- closed loop
- optic
- optical network
- passive optical
- Prior art date
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- Optical Communication System (AREA)
Abstract
An apparatus for detecting breaking of fiber-optic closed loop for a passive optical network PON (passive optical network) system is presented, it uses the fiber bragg grating to detect intensity of a reflected lightwave, and to determine whether the fiber-optic closed loop is broken or not and whether the light loss thereof is too large, so as to differentiate the electrical system control from the fiber-optic closed loop in determining which one is faulty; this invention uses 1550 nm fiber bragg grating (FBG) as the main component in corporation with the 1550 nm optical band-pass filter, the optical circulator, the adjustable laser source and the optical power meter together to constitute a the detecting apparatus. The detecting apparatus is a low-cost technology of fiber-optic closed loop and can be abundantly reproduced and fabricated, and can be used in a general control room to determine whether the user's fiber-optic closed loop is broken or not and whether the light loss thereof is too large, so as to enormously reduce the cost of maintenance and repair outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW94140749A TWI273223B (en) | 2005-11-21 | 2005-11-21 | Apparatus for detecting breaking of fiber-optic closed loop for a passive optical network (PON) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW94140749A TWI273223B (en) | 2005-11-21 | 2005-11-21 | Apparatus for detecting breaking of fiber-optic closed loop for a passive optical network (PON) system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI273223B TWI273223B (en) | 2007-02-11 |
| TW200720636A true TW200720636A (en) | 2007-06-01 |
Family
ID=38621428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW94140749A TWI273223B (en) | 2005-11-21 | 2005-11-21 | Apparatus for detecting breaking of fiber-optic closed loop for a passive optical network (PON) system |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI273223B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5136132B2 (en) * | 2008-03-17 | 2013-02-06 | 日本電気株式会社 | Optical transmission apparatus, optical transmission system, apparatus control method, and apparatus program |
-
2005
- 2005-11-21 TW TW94140749A patent/TWI273223B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TWI273223B (en) | 2007-02-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |