Patent US5673344A successfully refreshed from Google Patents.
US5673344A
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Bi-directional light port for injecting light into and tapping light from a side of an optical fiber
Assignee: NEC Corp
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Filing: 1996-06-20
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Granted: 1997-09-30
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Expires: 2016-06-20
Abstract
Abstract A method and apparatus for tapping and distributing light propagating through a polymer optical fiber (POF). Within the polymer optical fiber, one or more mirrors are constructed. At a point in the POF where an internal mirror is constructed, light traversing the POF is efficiently diverted out of the polymer optical fiber upon striking the mirror. As such, the light which is diverted is effectively tapped off and may be put to an advantageous use.
Inventors
- 👤 Yao Li
- 👤 Ting Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:12
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2852; G02B6/2817
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A bi-directional light port, for tapping light from and injecting light into an optical fiber comprising: one or more mirrors, positioned within the optical fiber such that a desirable portion of light traversing the fiber is deflected out a side of the optical fiber and light striking the side of the fiber adjacent to the mirror is injected into the fiber and reflected by the mirror such that the injected light traverses the fiber and wherein said mirrors are constructed by cutting the fiber and removing a portion of the optical fiber so that a mirror region is created and said mirror region is subsequently refilled with a suitable material.
Claim 2
Dependent Claim
110 words
A bi-directional light port, for tapping light from and injecting light into an optical fiber comprising: one or more mirrors, positioned within the optical fiber such that a desirable portion of light traversing the fiber is deflected out a side of the optical fiber and light striking the side of the fiber adjacent to the mirror is injected into the fiber and reflected by the mirror such that the injected light traverses the fiber and wherein said mirrors are constructed by cutting the fiber and removing a portion of the optical fiber so that a mirror region is created and said mirror region is subsequently refilled with a suitable material.
Claim 3
Dependent Claim
33 words
The bi-directional light port according to claim 1 wherein said mirrors further comprise: a coating, applied to the mirrors wherein said coating is a reflective material that enhances the reflectivity of the mirrors.
Claim 4
Dependent Claim
17 words
The bi-directional light port according to claim 2, wherein said mirrors are cut with a sharp instrument.
Claim 5
Dependent Claim
17 words
The bi-directional light port according to claim 3 wherein said sharp instrument is heated prior to cutting.
Claim 6
Dependent Claim
37 words
The bi-directional light port according to claim 1 further comprising: one or more opposing mirrors, positioned within the optical fiber such that said injected light strikes both the mirrors and opposing mirrors and traverses the fiber bi-directionally.
Claim 7
Dependent Claim
38 words
The bi-directional light port according to claim 1 wherein said optical fiber is coupled to a light source and a power meter such that light power my be monitored during the cutting and refilling of the optical fiber.
Claim 8
Dependent Claim
30 words
The bi-directional light port according to claim 1 wherein said deflected light is deflected out of a desirable portion of the circumference of the fiber from 0 to 360 degrees.
Claim 9
Dependent Claim
29 words
The bi-directional light port according to claim 1 wherein said injected light is injected into a desirable portion of the circumference of the fiber from 0 to 360 degrees.
References Cited (Backward Citations)
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US5432876A
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US5432876C1
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-29 | 2001-03-31 | 2001-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-29 | 2005-03-31 | 2005-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-29 | 2009-03-31 | 2009-09-30 | $7700.00 | Window Closed / Lapsed |