US4783137A — Fiber optic coupling system

Claim 1

Independent Claim 109 words

A fiber optic coupling device for bi-directional transmission of optical signals within a range of wavelengths between a fiber optic link cable and a transmitter/receiver comprising: receive lightguide for guiding optical input signals over said range of wavelengths to said transmitter/receiver; transmit lightguide for transmitting optical output signals substantially within said range of wavelengths from said transmitter/receiver; coupler/connector means, operating without wavelength multiplexing, for axially and angularly aligning said transmit and receive lightguides with said fiber optic link cable; said coupler/connector means or said fiber optic link cable reducing the intensity of reflected optical signals thereby allowing simultaneous distinguishable bi-directional optical communication of data within said range of wavelengths.

Claim 2

Dependent Claim 109 words

A fiber optic coupling device for bi-directional transmission of optical signals within a range of wavelengths between a fiber optic link cable and a transmitter/receiver comprising: receive lightguide for guiding optical input signals over said range of wavelengths to said transmitter/receiver; transmit lightguide for transmitting optical output signals substantially within said range of wavelengths from said transmitter/receiver; coupler/connector means, operating without wavelength multiplexing, for axially and angularly aligning said transmit and receive lightguides with said fiber optic link cable; said coupler/connector means or said fiber optic link cable reducing the intensity of reflected optical signals thereby allowing simultaneous distinguishable bi-directional optical communication of data within said range of wavelengths.

Claim 3

Dependent Claim 42 words

The device of claim 1 wherein said coupler/connector further comprises connector means for maintaining one end face of each of said transmit and receive lightguides parallel to and a predetermined longitudinal distance from an end face of said fiber optic link cable.

Claim 4

Dependent Claim 16 words

The device of claim 2 wherein said predetermined longitudinal distance is from 5 to 40 microns.

Claim 5

Dependent Claim 81 words

The device of claim 1 wherein said receive and transmit lightguides comprise: fiber optic core means having a predetermined core diameter; and cladding means surrounding said fiber optic core means having a thickness which is from 4 percent to 30 percent of said predetermined core diameter so that said fiber optic core means of said receive and transmit lightguides may be closely spaced within said coupler/connector to maximize their packing ratio while maintaining low leakage between said fiber optic core means.

Claim 6

Dependent Claim 42 words

The device of claim 4 wherein said coupler/connector further comprises connector means for maintaining one end face of each of the transmit and receive lightguides parallel to and a predetermined longitudinal distance from an end face of said fiber optic link cable.

Claim 7

Dependent Claim 20 words

The device of claim 5 wherein said predetermined longitudinal distance is less than about one-half of said predetermined core diameter.

Claim 8

Dependent Claim 25 words

The device of claim 4 wherein said receive lightguide includes at least two optical fibers and said transmit lightguide includes at least one optical fiber.

Claim 9

Dependent Claim 49 words

The fiber optic coupling device of claim 1 wherein said coupler/connector means together with said fiber optic link cable attenuate reflected optical signals to ensure that reflected signals will not be detected as received signals, allowing said simultaneous distinguishable bi-directional optical communication of data within said range of wavelengths.

Claim 10

Dependent Claim 145 words

A fiber optic coupling device for bi-directional transmission of optical signals within a range of wavelengths comprising: receive lightguide including first core and cladding for guiding optical input signals over said range of wavelengths to a transmitter/receiver; transmit lightguide including second core and cladding for transmitting optical output signals substantially within said range of wavelengths from said transmitter/receiver; fiber optic link cable including third core and cladding, said third core having larger diameter than each of said first and second cores; coupler/connector means, operating without wavelength multiplexing, for maintaining said transmit and receive lightguides in a closely spaced configuration and axially and angularly aligning said transmit and receive lightguides with said fiber optic link cable; said coupler/connector means or said fiber optic link cable reducing the intensity of reflected optical signals thereby allowing simultaneous distinguishable bi-directional optical communication of data within said range of wavelengths.

Claim 11

Dependent Claim 145 words

A fiber optic coupling device for bi-directional transmission of optical signals within a range of wavelengths comprising: receive lightguide including first core and cladding for guiding optical input signals over said range of wavelengths to a transmitter/receiver; transmit lightguide including second core and cladding for transmitting optical output signals substantially within said range of wavelengths from said transmitter/receiver; fiber optic link cable including third core and cladding, said third core having larger diameter than each of said first and second cores; coupler/connector means, operating without wavelength multiplexing, for maintaining said transmit and receive lightguides in a closely spaced configuration and axially and angularly aligning said transmit and receive lightguides with said fiber optic link cable; said coupler/connector means or said fiber optic link cable reducing the intensity of reflected optical signals thereby allowing simultaneous distinguishable bi-directional optical communication of data within said range of wavelengths.

Claim 12

Dependent Claim 19 words

The device of claim 9 wherein said third core substantially overlaps both said first core and said second core.

Claim 13

Dependent Claim 65 words

The device of claim 9 wherein said first and second claddings surround said first and second cores, respectively, and have thicknesses which are from 4 percent to 30 percent of the diameters of said first and second cores, respectively, so that said first and second cores may be closely spaced within said coupler/connector to maximize their packing ratio while maintaining low leakage between said cores.

Claim 14

Dependent Claim 49 words

The fiber optic coupling device of claim 9 wherein said coupler/connector means together with said fiber optic link cable attenuate reflected optical signals to ensure that reflected signals will not be detected as received signals, allowing said simultaneous distinguishable bi-directional optical communication of data within said range of wavelengths.

Claim 15

Dependent Claim 42 words

The device of claim 9 wherein said coupler/connector further comprises connector means for maintaining one end face of each of said transmit and receive lightguides parallel to and a predetermined longitudinal distance from an end face of said fiber optic link cable.

Claim 16

Dependent Claim 24 words

The device of claim 13 wherein said predetermined longitudinal distance is about one-half the smaller of the diameters of said first and second cores.

Claim 17

Dependent Claim 149 words

A bi-directional fiber optic communication device comprising: receiver for detecting optical input signals, said optical input signals comprising first modulated light within a band of wavelengths corresponding with an LED output, and for generating electrical input signals in response thereto; transmitter for producing optical output signals, said optical output signals comprising second modulated light within said band of wavelengths, in response to electrical output signals; receive lightguide connected to said receiver for guiding said optical input signals thereto; transmit lightguide connected to said transmitter for transmitting said optical signals therefrom; coupler/connector means for axially and angularly aligning said transmit and receive lightguides with a fiber optic link cable said coupler/connector or said fiber optic link cable reducing the intensity of reflected optical signals; thereby providing for simultaneous bi-directional coupling of said optical input and output signals between said transmit and receive lightguide means and said fiber optic link cable.

Claim 18

Dependent Claim 149 words

A bi-directional fiber optic communication device comprising: receiver for detecting optical input signals, said optical input signals comprising first modulated light within a band of wavelengths corresponding with an LED output, and for generating electrical input signals in response thereto; transmitter for producing optical output signals, said optical output signals comprising second modulated light within said band of wavelengths, in response to electrical output signals; receive lightguide connected to said receiver for guiding said optical input signals thereto; transmit lightguide connected to said transmitter for transmitting said optical signals therefrom; coupler/connector means for axially and angularly aligning said transmit and receive lightguides with a fiber optic link cable said coupler/connector or said fiber optic link cable reducing the intensity of reflected optical signals; thereby providing for simultaneous bi-directional coupling of said optical input and output signals between said transmit and receive lightguide means and said fiber optic link cable.

Claim 19

Dependent Claim 42 words

The device of claim 15 wherein said coupler/connector further comprises connector means for maintaining one end face of each of said transmit and receive lightguides parallel to and a predetermined longitudinal distance from an end face of said fiber optic link cable.

Claim 20

Dependent Claim 16 words

The device of claim 16 wherein said predetermined longitudinal distance is from 5 to 40 microns.

Claim 21

Dependent Claim 81 words

The device of claim 15 wherein said receive and transmit lightguides comprise: fiber optic core means having a predetermined core diameter; and cladding means surrounding said fiber optic core means having a thickness which is from 4 percent to 30 percent of said predetermined core diameter so that said fiber optic core means of said receive and transmit lightguides may be closely spaced within said coupler/connector to maximize their packing ratio while maintaining low leakage between said fiber optic core means.

Claim 22

Dependent Claim 42 words

The device of claim 18 wherein said coupler/connector further comprises connector means for maintaining one end face of each of the transmit and receive lightguides parallel to and a predetermined longitudinal distance from an end face of said fiber optic link cable.

Claim 23

Dependent Claim 20 words

The device of claim 19 wherein said predetermined longitudinal distance is less than about one-half of said predetermind core diameter.

Claim 24

Dependent Claim 175 words

An optical fiber transmission system for simultaneous bi-directional transmission of optical signals comprising: first transmitter/receiver means for detecting optical input signals over a range of wavelengths and generating first electrical input signals in response thereto, and for producing optical output signals in a band of wavelengths substantially within said range of wavelengths in response to first electrical output signals; second transmitter/receiver means for detecting said optical output signals over said range of wavelengths and generating second electrical input signals in response thereto, and for producing said optical input signals substantially within said band of wavelengths in response to second electrical output signals; fiber optic link cable for transmitting said optical input and output signals between said first and second transmitter/receivers; coupler/connector means at each end of said fiber optic link cable to attach said link cable to said first and second transmitter/receivers said coupler/connector or said fiber optic link cable reducing the intensity of reflected optical signals thereby allowing simultaneous distinguishable bi-directional communication of said optical input and output signals within said range of wavelengths.

Claim 25

Dependent Claim 175 words

An optical fiber transmission system for simultaneous bi-directional transmission of optical signals comprising: first transmitter/receiver means for detecting optical input signals over a range of wavelengths and generating first electrical input signals in response thereto, and for producing optical output signals in a band of wavelengths substantially within said range of wavelengths in response to first electrical output signals; second transmitter/receiver means for detecting said optical output signals over said range of wavelengths and generating second electrical input signals in response thereto, and for producing said optical input signals substantially within said band of wavelengths in response to second electrical output signals; fiber optic link cable for transmitting said optical input and output signals between said first and second transmitter/receivers; coupler/connector means at each end of said fiber optic link cable to attach said link cable to said first and second transmitter/receivers said coupler/connector or said fiber optic link cable reducing the intensity of reflected optical signals thereby allowing simultaneous distinguishable bi-directional communication of said optical input and output signals within said range of wavelengths.

Claim 26

Dependent Claim 63 words

The transmission system of claim 21 wherein: said first and second transmitter/receiver means include transmit lightguides and receive lightguides for transmitting said optical output and input signals to and from said fiber link cable; and said coupler/connector means axially and angularly aligns an end face of each of said transmit and receive lightguides with an end face of said fiber optic link cable.

Claim 27

Dependent Claim 43 words

The transmission system of claim 22 wherein said coupler/connector further comprises connector means for maintaining one end face of each of said transmit and receive lightguides parallel to and a predetermined longitudinal distance from an end face of said fiber optic link cable.

Claim 28

Dependent Claim 17 words

The transmission system of claim 23 wherein said predetermined longitudinal distance is from 5 to 40 microns.

Claim 29

Dependent Claim 82 words

The transmission system of claim 24 wherein said receive and transmit lightguides comprise: fiber optic core means having a predetermined core diameter; and cladding means surrounding said fiber optic core means having a thickness which is from 4 percent to 30 percent of said predetermined core diameter so that said fiber optic core means of said receive and transmit lightguides may be closely spaced within said coupler/connector to maximize their packing ratio while maintaining low leakage between said fiber optic core means.

Claim 30

Dependent Claim 43 words

The transmission system of claim 25 wherein said coupler/connector further comprises connector means for maintaining one end face of each of said transmit and receive lightguides parallel to and a predetermined longitudinal distance from an end face of said fiber optic link cable.

Claim 31

Dependent Claim 21 words

The transmission system of claim 26 wherein said predetermined longitudinal distance is less than about one-half of said predetermined core diameter.

Claim 32

Dependent Claim 61 words

The transmission system of claim 22 wherein: each said transmit lightguide includes first fiber optic core and cladding; each said receive lightguide includes second fiber optic core and cladding; and said fiber optic link cable includes third fiber optic core and cladding, said third fiber optic core having a diameter greater than that of said first and second fiber optic cores.

Claim 33

Dependent Claim 24 words

The device of claim 1 wherein said fiber optic link cable has a preselected minimum length for reducing the intensity of reflected optical signals.

Claim 34

Dependent Claim 27 words

The device of claim 1 wherein said fiber optic link cable includes at least one rough polished end face for reducing the intensity of reflected optical signals.

Claim 35

Dependent Claim 27 words

The device of claim 1 wherein said coupler/connector means includes mode stripping means adjacent said transmit and receive lightguides for reducing the intensity of reflected optical signals.

Claim 36

Dependent Claim 24 words

The device of claim 9 wherein said fiber optic link cable has a preselected minimum length for reducing the intensity of reflected optical signals.

Claim 37

Dependent Claim 27 words

The device of claim 9 wherein said fiber optic link cable includes at least one rough polished end face for reducing the intensity of reflected optical signals.

Claim 38

Dependent Claim 27 words

The device of claim 9 wherein said coupler/connector means includes mode stripping means adjacent said transmit and receive lightguides for reducing the intensity of reflected optical signals.

Claim 39

Dependent Claim 24 words

The device of claim 15 wherein said fiber optic link cable has a preselected minimum length for reducing the intensity of reflected optical signals.

Claim 40

Dependent Claim 27 words

The device of claim 15 wherein said fiber optic link cable includes at least one rough polished end face for reducing the intensity of reflected optical signals.

Claim 41

Dependent Claim 27 words

The device of claim 15 wherein said coupler/connector means includes mode stripping means adjacent said transmit and receive lightguides for reducing the intensity of reflected optical signals.

Claim 42

Dependent Claim 24 words

The device of claim 21 wherein said fiber optic link cable has a preselected minimum length for reducing the intensity of reflected optical signals.

Claim 43

Dependent Claim 27 words

The device of claim 21 wherein said fiber optic link cable includes at least one rough polished end face for reducing the intensity of reflected optical signals.

Claim 44

Dependent Claim 27 words

The device of claim 21 wherein said coupler/connector means includes mode stripping means adjacent said transmit and receive lightguides for reducing the intensity of reflected optical signals.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-11-08	1992-05-09	1992-11-08	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-11-08	1996-05-09	1996-11-08	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-11-08	2000-05-09	2000-11-08	$7700.00	Window Closed / Lapsed

Fiber optic coupling system

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag