Tunable all-optical delays via Brillouin slow light in an optical fiber
Tunable all-optical delays via Brillouin slow light in an optical fiber
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DOI：
10.1103/physrevlett.94.153902
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发表时间：
2005-04-22
影响因子：
8.6
通讯作者：
Gaeta, AL
中科院分区：
文献类型：
--
作者：
Okawachi, Y;Bigelow, MS;Gaeta, AL
我们展示了一种利用受激布里渊散射过程在通信波长的室温单模光纤中产生可调谐全光延迟的技术。该技术利用了在布里渊增益特征附近发生的折射率的快速变化。通过控制激光泵浦过程的波长，产生诱导延迟的波长是可调的，并且通过调节泵浦光场的强度，延迟的大小可以连续可调，最大可达25 ns。这项技术可以应用于短至15 ns的脉冲。该方案代表了为包括电信系统中的缓冲在内的各种应用实现慢光技术的重要的第一步。
We demonstrate a technique for generating tunable all-optical delays in room temperature single-mode optical fibers at telecommunication wavelengths using the stimulated Brillouin scattering process. This technique makes use of the rapid variation of the refractive index that occurs in the vicinity of the Brillouin gain feature. The wavelength at which the induced delay occurs is broadly tunable by controlling the wavelength of the laser pumping the process, and the magnitude of the delay can be tuned continuously by as much as 25 ns by adjusting the intensity of the pump field. The technique can be applied to pulses as short as 15 ns. This scheme represents an important first step towards implementing slow-light techniques for various applications including buffering in telecommunication systems.