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) system

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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
Application number
TW094140749A
Other languages
Chinese (zh)
Other versions
TWI273223B (en
Inventor
hong-hui Liao
Yi-Ming Liu
Original Assignee
Chunghwa Telecom Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chunghwa Telecom Co Ltd filed Critical Chunghwa Telecom Co Ltd
Priority to TW94140749A priority Critical patent/TWI273223B/en
Application granted granted Critical
Publication of TWI273223B publication Critical patent/TWI273223B/en
Publication of TW200720636A publication Critical patent/TW200720636A/en

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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.
TW94140749A 2005-11-21 2005-11-21 Apparatus for detecting breaking of fiber-optic closed loop for a passive optical network (PON) system TWI273223B (en)

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

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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)

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TW (1) TWI273223B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
TWI273223B (en) 2007-02-11

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