发明名称 |
Process and device for regulating the light power of laser diodes |
摘要 |
PCT No. PCT/FR84/00056 Sec. 371 Date Nov. 9, 1984 Sec. 102(e) Date Nov. 9, 1984 PCT Filed Mar. 9, 1984 PCT Pub. No. WO84/03592 PCT Pub. Date Sep. 13, 1984.The device adapted to regulate the light power emitted by a laser diode (2) associated to an electric supply circuit (32) comprises a photosensor (6) providing an electric signal representing the mean optical power of the laser diode. A circuit (8) associated to the photodetector provides an error signal representing the deviation between the actual light power and an order power. The error signal is applied to a circuit (10) which controls a Peltier element (22) for cooling the laser. The supply circuit (32) either uses constant current or is controlled by a safety branch (30) which is operated in case of a sudden temperature variation of failure of the main servo control. The device may be particularly used in telecommunications.
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申请公布号 |
US4955029(A) |
申请公布日期 |
1990.09.04 |
申请号 |
US19840682355 |
申请日期 |
1984.11.09 |
申请人 |
LECOY, PIERRE;WILBROD, JEAN-HUBERT |
发明人 |
LECOY, PIERRE;WILBROD, JEAN-HUBERT |
分类号 |
H01S5/024;H01S5/068;H01S5/0683 |
主分类号 |
H01S5/024 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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