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1.发明授权公开(公告)号：US06765709B1
公开(公告)日：2004-07-20
申请号：US10424660
申请日：2003-04-28
IPC分类号： G02F111
CPC分类号： G02F1/113 , G02F1/0147 , G02F2201/124 , G02F2203/21 , G02F2203/60
摘要： A multi-channel acousto-optic modulator contains an integrated structure for providing active compensation for transient thermal effects. A plurality of electro-thermal elements in the form of resistive strips are interleaved with acoustic wave launching transducers, to which signals are applied for modulating respective acoustic waves launched into an acousto-optic medium. The resistive strips receive electrical signals that controllably introduce respective thermal energy components into the acousto-optic medium adjacent to the signal launch transducers, in a manner that causes the overall spatial distribution of thermal energy in the acousto-optic medium to have a prescribed characteristic. By establishing an thermal gradient characteristic across all the channels of the RF signal processor, and compensating each channel on an individual basis, the invention effectively compensates for time-dependent variations in heating, resulting in a substantially level thermal behavior.
摘要翻译： 多声道声光调制器包含用于提供瞬态热效应的有源补偿的集成结构。 电阻条形式的多个电热元件与声波发射换能器交错，信号被施加到声波发射换能器，用于调制发射到声光介质中的各个声波。 电阻条接收电信号，其可以以使得声光介质中的热能的总体空间分布具有规定特性的方式可控地将相应的热能分量引入与信号发射换能器相邻的声光介质中。 通过在RF信号处理器的所有通道上建立热梯度特性，并且在各个基础上补偿每个通道，本发明有效地补偿了加热时间上的变化，导致基本上水平的热行为。
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公开(公告)号：US06870658B2
公开(公告)日：2005-03-22
申请号：US10462552
申请日：2003-06-16
CPC分类号： H03F1/30 , G02F1/0121 , G02F1/113 , H03F1/02 , H03F2200/105
摘要： An RF power controller arrangement prevents excessive RF power-based thermal loading of an RF signal processing device, such an as acousto-optic modulator, by controllably constraining the product of the average on-duration of a baseband modulation signal and RF input power to realize no more than a prescribed value of RF energy supplied to the modulator.
摘要翻译： RF功率控制器布置通过可控地约束基带调制信号的平均接通时间和RF输入功率的乘积来防止RF信号处理设备（例如声光调制器）的过多的基于RF功率的热负载，以实现 不超过提供给调制器的规定值的RF能量。
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