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    • 45. 发明授权
    • All-optical, tunable regenerator, reshaper and wavelength converter
    • 全光学,可调谐再生器,整形和波长转换器
    • US06947206B2
    • 2005-09-20
    • US10623280
    • 2003-07-18
    • Sagie TsadkaShalva Ben-EzraHaim ChayetNir Shachar
    • Sagie TsadkaShalva Ben-EzraHaim ChayetNir Shachar
    • G02B20060101H01S3/00H04B10/02H04B10/17
    • H01S5/50H01S5/4025H01S5/4087H01S5/5054H01S5/509H04B10/299
    • The invention consists of a system and method for regenerating and converting optical signals. The invention provides both “2R (i.e. reamplification and reshaping) and “3R” (i.e. reamplification, reshaping, and resynchronization (or retiming)) regeneration. The components of the inventive system include a tunable continuous wave (CW) laser source, an optical circulator, an semiconductor optical amplifier (SOA), and a spectral filter that has a very sharp cutoff frequency. In alternative embodiments, the filter may be replaced with an interleaver that passes several wavelengths. A single interleaver may be used by several of the optical regenerators/converters described herein. Each regenerator uses a separate wavelength that is associated with a passband frequency of the single interleaver. During counter-propagation in the SOA, a CW signal from the CW laser is chirped by bits in an input signal. The chirped signal is then output to the filter, which blocks the original CW signal.
    • 本发明由用于再生和转换光信号的系统和方法组成。 本发明提供了“2R(即再扩张和整形)”和“3R”(即再扩张,重新整形和再同步(或重定时))再生。本发明系统的组件包括可调连续波(CW)激光源, 循环器,半导体光放大器(SOA)和具有非常尖锐的截止频率的光谱滤波器,在替代实施例中,滤波器可以用通过几个波长的交织器代替,单个交织器可以由几个光学 每个再生器使用与单个交织器的通带频率相关联的单独波长,在SOA中的反向传播期间,来自CW激光器的CW信号被输入信号中的位啁啾,啁啾 信号然后输出到滤波器,阻塞原始的CW信号。
    • 48. 发明授权
    • Cross-gain modulation type optical wavelength converter having high extinction ratio and wide input dynamic range
    • 具有高消光比和宽输入动态范围的交叉增益调制型光波长转换器
    • US06795233B2
    • 2004-09-21
    • US10360453
    • 2003-02-06
    • Joon Hak BangJe Soo Ko
    • Joon Hak BangJe Soo Ko
    • G02F135
    • G02F2/004G02F1/3536G02F2002/006H01S5/5054
    • The present invention provides a cross-gain modulation type optical wavelength converter having a high extinction ratio and a wide input dynamic range, which is capable of preventing an extinction ratio from lowering and allowing an input dynamic range to widen. The XGM type optical wavelength converter of the present invention allows a probe light to be cross-gain modulated by a pump light one more time using two SOAs, and allows the width of the modulation of the probe light to be further broadened, thereby improving the extinction ratio after wavelength conversion. Simultaneously, the XGM type optical wavelength converter detects the intensity of an optical signal inputted to the optical wavelength converter and automatically controls the intensity of the probe light on the basis of the detected intensity of the input optical signal, thereby providing a wide input dynamic range.
    • 本发明提供一种具有高消光比和宽输入动态范围的交叉增益调制型光波长转换器,其能够防止消光比降低并允许输入动态范围变宽。 本发明的XGM型光波长转换器通过使用两个SOA使探针光能够通过泵浦光多次进行交叉增益调制,能够使探测光的调制宽度进一步扩大, 波长转换后的消光比。 同时,XGM型光波长转换器检测输入到光波长转换器的光信号的强度,并根据输入光信号的检测强度自动控制探测光的强度,从而提供宽的输入动态范围 。