Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1986-02-20
1988-03-15
LaRoche, Eugene R.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455612, G02B 628, H04B 900
Patent
active
047308885
ABSTRACT:
The present invention relates to an optimized guided wave microwave or lightwave communication system or network wherein a plurality of directional couplers (14, 17) (a) are disposed along a bus-like wave guiding means (13, 16), and (b) include separate coupling coefficients which are optimized. More particularly, the present invention relates to a guided wave communication system or network including, for example, a head-end unit (15) which is coupled to one end of a bus-like wave guiding means. Separate directional couplers are disposed along the wave guiding means to couple lightwave or microwave signals either (a) into the bus-like wave guiding means (13) from separate transmitters (11), or (b) from a bus-like wave guiding means (16) to separate receivers (12). The directional couplers disposed along a guiding means each include a separate coupling coefficient which is optimized to only couple enough of the lightwave or microwave energy onto or from the associated guiding means so that either (a) the head-end unit receives a minimal signal power level from each transmitter or (b) the receivers receive a minimal signal power level from the head-end unit, respectively, to provide a predetermined bit error rate regardless of their distance from the head-end unit along the associated wave guiding means.
REFERENCES:
patent: 4006963 (1977-02-01), Baues et al.
patent: 4146297 (1979-03-01), Alferness et al.
patent: 4166669 (1979-09-01), Leonberger et al.
patent: 4181399 (1980-01-01), McMahon et al.
patent: 4317614 (1982-03-01), Palmer
patent: 4336047 (1982-06-01), Pavopoulos et al.
patent: 4390236 (1983-06-01), Alferness
patent: 4550974 (1985-11-01), Murphy
Optics Communications, Jul. 1977, vol. 22, No. 1, "Modification of the Coupling Coefficient by Periodic Modulation of the Propagation Constants." by Tsukada, Mitsubishi Corp.
Gedeon, Jrnl. Opt. Soc. of America, vol. 64, No. 5, May 1974, pp. 615-618.
Alferness et al., Topical Meeting Integrated & Guided Wave Optics, Jan. 16-18, 1978, Salt Lake City, Utah, pp. TuA3-1-TuA3-3.
Bergh et al., Electronic Letters, vol. 16, No. 7, Mar. 27, 1980, pp. 260-261.
Digonnet et al., IEEE Jrnl. Quantum Electronics, vol. QE-18, No. 4, Apr. 1982, pp. 746-754.
Darcie Thomas E.
Whalen Matthew S.
American Telephone and Telegraph Company AT&T Bell Laboratories
LaRoche Eugene R.
Lee James C.
Pfeifle Erwin W.
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