Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1985-07-22
1988-05-31
Masinick, Michael A.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455612, 370 3, 372 99, H04B 900, H01S 308
Patent
active
047486872
ABSTRACT:
A narrow band laser transmitter comprising a semiconductor laser and an external optical resonator coupled by a coupling arrangement to the semiconductor laser characterized by the external optical resonator being a wavelength-selective fiber directional coupler in the form of a double core fiber whose cores have different refractive index discontinuities to the respective environments and different cross-sections. The laser transmitter is suitable for practical use, has a space-saving structure and is stable in operation.
REFERENCES:
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Auracher Franz
Boeck Georg
Schneider Hartmut
Masinick Michael A.
Siemens Aktiengesellschaft
Telesz Jr. Andrew J.
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