Venkatesan T, Lemaire P J, Wilkens B, Soto L, Gossard A C, Wiegmann W, Jewell J L, Gibbs H M, Tarng S S
Opt Lett. 1984 Jul 1;9(7):297-9. doi: 10.1364/ol.9.000297.
We demonstrate the potential for all-optical processing of data transmitted over single-mode fibers using a bistable optical device (BOD). A stream of clock/bias pulses transmitted over a 1-km-long single-mode fiber (SMF) is processed by a pseudorandom data sequence of picosecond pulses transmitted over another 1-km SMF with the help of an optical bistable device. The processed signal from the BOD is transmitted over another kilometer of SMF and detected. The bistable device is an ~3-microm-thick molecular-beam epitaxially grown multiple-quantum-well structure of GaAs and GaAlAs. The clock pulses (at wavelength lambda = 870.0 nm) are just below the threshold for switching on the device, and the switching is accomplished by a pseudorandom data sequence of picosecond pulses (at lambda = 835.0 nm). The pulse width of the data transposed onto the clock stream by the BOD can be controlled by varying the phase of the switching data with respect to the clock, which may be of importance in interle aving data for time-division multiplexing. The experiment also demonstrates the potential of a BOD's capability of switching information from one wavelength to another. With optimized devices regeneration should be possible with reasonable gain.
我们展示了使用双稳态光学器件（BOD）对单模光纤中传输的数据进行全光处理的潜力。在1公里长的单模光纤（SMF）上传输的时钟/偏置脉冲流，在光学双稳态器件的帮助下，由在另一根1公里长的SMF上传输的皮秒脉冲伪随机数据序列进行处理。来自BOD的处理后信号通过另一公里的SMF传输并被检测。该双稳态器件是一个通过分子束外延生长的约3微米厚的GaAs和GaAlAs多量子阱结构。时钟脉冲（波长λ = 870.0纳米）刚好低于开启该器件的阈值，而开关操作由皮秒脉冲伪随机数据序列（波长λ = 835.0纳米）完成。通过改变开关数据相对于时钟的相位，可以控制由BOD转置到时钟流上的数据的脉冲宽度，这在时分复用的数据交织中可能很重要。该实验还展示了BOD将信息从一个波长切换到另一个波长的能力的潜力。通过优化器件，应该有可能以合理的增益实现再生。
