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Double-window fiber (dual window fiber)
| Fiber Optic Glossary |
1) multimode fibers optimized for 850 nm and 1300 nm operation. 2) single-mode fibers optimized for 1310 nm and 1550 nm operation.
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Crosstalk (xt), английский
1) undesired coupling from one circuit, part of a circuit, or channel to another. 2) any phenomenon by which a signal transmitted on one circuit or channel of a transmission system creates and undesired effect in another circuit or channel.
Phase-shift keying (psk), английский
1) in digital transmission, angle modulation in which the phase of the carrier discretely varies in relation, either to a reference phase or to the phase of the immediately preceding signal element, in accordance with data being transmitted. 2) in a communications system, the representation of characters, such as bits or quaternary digits, by a shift in the phase of an electromagnetic carrier wave with respect to a reference, by an amount corresponding to the symbol being encoded. also called biphase modulation, phase-shift signaling.
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