公开(公告)号：US5617234A

公开(公告)日：1997-04-01

申请号：US531980

申请日：1995-09-21

申请人： Masafumi Koga ,  Mitsuhiro Teshima ,  Hitoshi Obara ,  Ken'ichi Sato

发明人： Masafumi Koga ,  Mitsuhiro Teshima ,  Hitoshi Obara ,  Ken'ichi Sato

IPC分类号： G02B6/12 ,  G02B6/34 ,  H04B10/50 ,  H04B10/572 ,  H04S14/02

CPC分类号： H04B10/506 ,  G02B6/12011 ,  G02B6/12019 ,  G02B6/12033 ,  H04B10/572 ,  G02B2006/12135

摘要： A multiwavelength simultaneous monitoring circuit capable of precise discrimination of wavelengths of a WDM (Wavelength Division Multiplexed) signal including multiplexed wavelength waves, and suitable for optical integrated circuits having large resistance to vibration. It includes a reference optical source, an AWG (Arrayed-waveguide grating) having periodic center transmission wavelength (or crossover wavelengths) corresponding to the wavelength spacing between multiplexed waves of the WDM signal, a first wavelength error detector for generating a wavelength error signal of an RF signal (reference optical signal) with respect to a zero-cross wavelength on the basis of a ratio between the levels of the RF signal outputted from two output waveguides of the AWG, a control circuit for locking the zero-cross wavelength to the wavelength of the RF signal in response to the wavelength error signal, and a second wavelength error detector for generating wavelength error signals of the multiplexed waves of the WDM signal by detecting signal levels of respective wavelength signals of the WDM signal outputted from each pair of output ports of the AWG.

摘要翻译： 一种多波长同时监视电路，其能够精确地区分包括复用波长波的WDM（波分复用）​​信号的波长，并且适用于具有较大阻抗的光学集成电路。 它包括参考光源，具有对应于WDM信号的复用波之间的波长间隔的周期性中心透射波长（或交越波长）的AWG（阵列波导光栅），第一波长误差检测器，用于产生波长误差信号 基于从AWG的两个输出波导输出的RF信号的电平之间的比率，相对于零交叉波长的RF信号（参考光信号），用于将零交叉波长锁定到 响应于波长误差信号的RF信号的波长;以及第二波长误差检测器，用于通过检测从每对输出输出的WDM信号的各个波长信号的信号电平来产生WDM信号的复用波的波长误差信号 特设工作组的港口。