Coherent light generators – Particular temperature control – Heat sink
Patent
1985-10-28
1988-08-02
Davie, James W.
Coherent light generators
Particular temperature control
Heat sink
357 17, 357 81, 372 38, 372 44, H01S 3096
Patent
active
047617888
ABSTRACT:
A semiconductor laser mount is disclosed for use in high frequency (>500 Mb/s) applications. The mount comprises a stripline transmission path and resistive element formed in series with the optical device. Since the current sources used to modulate optical devices at these bit rates have a large impedance relative to that of the optical devices, the stripline is used as an impedance controlling network to provide frequency independent coupling from the signal source to the device and the resistive element is used to compensate the variation of the impedance of the device to essentially match that of the stripline. Since the impedance of individual optical devices may vary, the resistive element is sized to provide optimum matching. Both the stripline and resistive element are integrated with the mount material to form a monolithic structure. Additionally, low frequency optical device inputs may be formed on an isolated portion of the mount to increase the versatility of the arrangement by increasing the operable bandwidth of the optical device.
REFERENCES:
patent: 3757259 (1973-09-01), Jones et al.
patent: 4023198 (1977-05-01), Malone et al.
patent: 4035748 (1977-07-01), Kusaka et al.
patent: 4097891 (1978-06-01), Selway et al.
patent: 4297653 (1981-10-01), Scifres et al.
patent: 4301429 (1981-11-01), Goldman et al.
patent: 4338577 (1982-07-01), Sato et al.
patent: 4351051 (1982-09-01), vanAlem et al.
Dietrich Norman R.
Holbrook Walter R.
Johnson, Jr. Anderson F.
Zacharias Alfred
American Telephone and Telegraph Company
AT&T Bell Laboratories
AT&T Technologies
Davie James W.
Koba Wendy W.
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