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US4159418A
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US
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Delay line encoder-decoder
Assignee: Raytheon Co
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Filing: 1977-06-23
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Granted: 1979-06-26
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Expires: 1997-06-23
Abstract
Abstract Two multimode optical fibers connected mutually at several locations along their lengths can act as an encoding or decoding structure depending on which terminals are used for the input/output of the data. Two multicoupled lines have one input which acts as the matched filter for another input, thus enabling easy correlation of data. The performance of such a structure was simulated and the results are discussed.
Inventors
- 👤 Emanuel Marom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:05
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2861; G02B6/44; G02B6/4439; G02B6/4457; H; H04; H04B; H04B10/00; H04B10/25; H04B10/2581
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
77 words
A delay line encoder-decoder, comprising the combination: a first optical structure having at least two optical fiber coils integral therewith and having a coupling region between each of said at least two coils, each of said regions being at least one first coupling section; and a second optical structure having an optical fiber integral therewith, said optical fiber having a corresponding second section optically coupled to each said at least one first coupling section and contiguous thereto.
Claim 2
Dependent Claim
77 words
A delay line encoder-decoder, comprising the combination: a first optical structure having at least two optical fiber coils integral therewith and having a coupling region between each of said at least two coils, each of said regions being at least one first coupling section; and a second optical structure having an optical fiber integral therewith, said optical fiber having a corresponding second section optically coupled to each said at least one first coupling section and contiguous thereto.
Claim 3
Dependent Claim
23 words
The invention as stated in claim 1: said optical fiber including at least one coil between any adjacent two of said second sections.
Claim 4
Dependent Claim
24 words
The invention as stated in claim 1, including a light source optically coupled to a first of said at least two optical fiber coils.
Claim 5
Dependent Claim
21 words
The invention as stated in claim 1, including a light source optically coupled to an input end of the optical fiber.
Claim 6
Dependent Claim
19 words
The invention as stated in claim 4, including a sensor electrically connected to the input of the light source.
Claim 7
Dependent Claim
23 words
The invention as stated in claim 1, including a transducer optically coupled to a last of said at least one first coupling section.
Claim 8
Dependent Claim
20 words
The invention as stated in claim 1, including an amplifier optically coupled to the last of said corresponding coupling sections.
Claim 9
Dependent Claim
25 words
The invention as stated in claim 1, including a light source optically coupled to the first means for providing light input to said first means.
Claim 10
Dependent Claim
28 words
The invention as stated in claim 1, including a transducer optically coupled to the last of the first plurality of sections for converting optical energy into electrical energy.
Claim 11
Dependent Claim
27 words
The invention as stated in claim 1, including an amplifier optically coupled to the last of the second plurality of coupling sections for amplifying the optical energy.
Claim 12
Dependent Claim
21 words
The invention as stated in claim 1, including a light detector optically coupled to the last of said corresponding second section.
Claim 13
Dependent Claim
19 words
The invention as stated in claim 11, including an amplifier electrically connected to the output of the light detector.
Claim 14
Dependent Claim
25 words
The invention as stated in claim 1, including a light source optically coupled to the second means for providing light input to said second means.
Claim 15
Dependent Claim
27 words
The invention stated in claim 13, including a sensor electrically connected to the input of the light source for providing electrical signal input to said light source.
Claim 16
Dependent Claim
32 words
The invention as stated in claim 1, including a light detector optically coupled to the last of the second plurality of coupling sections for demodulating optical carrier signals and passing intelligence signals.
Claim 17
Dependent Claim
24 words
The invention as stated in claim 15, including an amplifier electrically connected to the output of the light detector for amplifying said electrical signals.
Claim 18
Dependent Claim
128 words
An optical delay method for encoding and decoding electromagnetic energy, comprising in combination the steps of: (a) injection light energy into a first optical delay line; (b) transferring said light energy to a second optical delay line; (c) passing the transferred light energy into a first load thereby encoding said light energy; (d) passing the light energy from the first optical delay line into a second load subsequent to step (a) and concurrent with steps (b) and (c); (e) injecting the encoded light energy into the second optical delay line; (f) transferring the encoded light energy from the second optical delay line to the first optical delay line; and (g) passing the transferred energy into the second load, as identified in step (d), thereby decoding said light energy.
Claim 19
Dependent Claim
128 words
An optical delay method for encoding and decoding electromagnetic energy, comprising in combination the steps of: (a) injection light energy into a first optical delay line; (b) transferring said light energy to a second optical delay line; (c) passing the transferred light energy into a first load thereby encoding said light energy; (d) passing the light energy from the first optical delay line into a second load subsequent to step (a) and concurrent with steps (b) and (c); (e) injecting the encoded light energy into the second optical delay line; (f) transferring the encoded light energy from the second optical delay line to the first optical delay line; and (g) passing the transferred energy into the second load, as identified in step (d), thereby decoding said light energy.
References Cited (Backward Citations)
US3217103A
Cited
US4028702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |