Optical communication device
AssigneeECI Telecom Ltd.
InventorUri Mahlab
Life of this patent
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Abstract
An optical extending device for use in transmission of optical signals which comprise at least one sequence of periodic optical signals, said optical device comprising: a first fiber optic having a characteristic dimensional propagation coefficient equal to β1 and adapted to be connected to a single mode second fiber optic having a length equal to L0 and a characteristic dimensional propagation coefficient equal to β0, wherein Lp, the length of said first fiber optic is substantially equal to {[T2/Π−L0*β0]/β1}*{1−MOD(L0/{T2/Π−L0*β0]/g(b)}} and wherein: n is an integer 1, 2, 3 . . . and is selected in accordance L0, the length of the single mode second fiber optic; T is a time period of the periodic optical signals; and MOD is the remainder obtained from dividing 10 by {[T2/Π−L0*β0]/β1}.
Claims18
An optical extending device for use in transmission of optical signals which comprise at least one sequence of periodic optical signals, said optical device comprising:
- a first fiber optic having a characteristic dimensional propagation coefficient equal to β1 and adapted to be connected to a single mode second fiber optic having a length equal to L0 and a characteristic dimensional propagation coefficient equal to β0 wherein LP, the length of said first fiber optic is substantially equal to
- {[T2/π−L0*β0]/β1}*{1−MOD(L0/{[T2/π−L0*β0]/β1}}
- and the overall length of said first and second fiber optics is n·LP
- and wherein:
- n is an integer 1, 2, 3. . . , and is selected in accordance L0, the length of said single mode second fiber optic;
- T is a time period of the periodic optical signals;
- and
- MOD is the remainder obtained from dividing L0 by {[T2/π−L0*β0]/β1}.
A telecommunication system comprising:
- at least one optical transmitter;
- an optical link adapted to convey periodic communication signals transmitted by said transmitter;
- a self signal constructor adapted to convey said periodic telecommunication signals transmitted along said optical link and forward them, comprising at least one fiber optic extension having a characteristic dimensional propagation coefficient that is equal to β1 and having a length that is substantially equal to
- {[T2/π−L0*β0]/β1}*{1−MOD(L0/{[T2/π−L0*β0]/β1}}
- and the overall length of said optical link and said at least one fiber optic extension is n·LP
- wherein:
- L0 is the length of said optical link;
- β0 is a characteristic dimensional propagation coefficient of a single mode optical fiber of said optical link;
- n is an integer 1, 2, 3. . . , selected in accordance with the value of L0;
- T is a time period of said periodic communication signals;
- and
- at least one optical receiver.
A telecommunication system comprising:
- a plurality of first optical transceivers for conveying optical transmissions, each of said first optical transceivers having an index i;
- at least one second optical transceiver;
- and
- a plurality of optical fibers for coupling said first optical transceivers to said at least one second optical transceiver for placing said at least one second optical transceiver in communication with said plurality of first optical transceivers,
- wherein:
- each of said plurality of optical fibers comprises a first fiber optic portion and a second fiber optic portion,
- said first fiber optic portion has a characteristic dimensional propagation coefficient equal to β1i,
- said second fiber optic portion has a length equal to L0i and a characteristic dimensional propagation coefficient equal to β0i, and
- each of said plurality of optical fibers has an overall length that is substantially equal to:
- n·{[Ti2/π−L0i*β0i]/β1i}*{1−MOD(L0i/{[Ti2/π−L0i*β0i*β1i}}
- where:
- n is an integer 1, 2, 3. . . and is selected in accordance with the length L0i associated with the respective optical fiber,
- Ti is a time period of the period optical signal in the respective optical fiber, and
- MOD is the remainder obtained from dividing L0i by {[Ti2/π−L0i*β0i]/β1i}.
Dependencies are inferred from the claim text.