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首页> 外文期刊>Advanced Materials >High-gain Broadband Solid-state Optical Amplifier Using A Semiconducting Copolymer
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High-gain Broadband Solid-state Optical Amplifier Using A Semiconducting Copolymer

机译：使用半导体共聚物的高增益宽带固态光放大器

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Interest in semiconducting polymers as gain media has grown over recent years, due to their high gain over a broad bandwidth, simple processing techniques, low manufacturing costs, and their potential to being electrically pumped. These polymers have been shown to be suitable for photonic devices such as lasers and amplifiers, and can be used in conjunction with polymer optical fibers (POF) for short-haul telecommunication networks, which are to replace twisted pair cables. In particular, amplifying devices are needed to compensate for the loss of signal during transmission and splitting. Semiconducting polymers have potential for excellent compatibility with POF, including broad-bandwidth amplification matching the POF transmission window. Gains of up 21 and 18dB/mm using the polymers poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene) (MEH-PPV) and poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) at high repetition rates of 5 kHz have been demonstrated. Along with high gain, key material parameters for these devices are large amplification bandwidth and long gain lifetimes . Gain-saturation mechanisms, which limit the amplifier performance, are not well understood. In the present work, we have explored the scope of improving the perfomance of polymer optical amplifiers by diluting the chromophores responsible for the gain with higher-energy conjugated segments, in a co-polymer. We find that optical amplification of 1000 times can be obtained with 100 fs pulses in fluorene benzothiadiazole copolymer waveguides.
机译：近年来，由于半导体聚合物在较宽的带宽上具有高增益，简单的加工技术，较低的制造成本以及被电泵化的潜力，因此人们对作为增益介质的半导体聚合物的兴趣日益增长。这些聚合物已显示适用于光子设备，例如激光器和放大器，并且可以与短距离电信网络的聚合物光纤（POF）结合使用，以替代双绞线电缆。特别地，需要放大装置来补偿在传输和分离期间的信号损失。半导体聚合物具有与POF极好的兼容性的潜力，包括与POF传输窗口匹配的宽带放大。使用聚合物聚（2-甲氧基-5-（2'-乙基己氧基）-对亚苯基亚乙烯基）（MEH-PPV）和聚（9,9-二辛基芴-共-苯并噻二唑），增益高达21和18dB / mm F8BT）在5 kHz的高重复率下得到了证明。除了高增益外，这些设备的关键材料参数还包括大的放大带宽和长的使用寿命。限制放大器性能的增益饱和机制尚未得到很好的理解。在当前的工作中，我们探索了通过在共聚物中稀释高能共轭链段负责增益的生色团来提高聚合物光放大器性能的范围。我们发现，在芴苯并噻二唑共聚物波导中，利用100 fs脉冲可以获得1000倍的光放大。

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