公开(公告)号：WO2012154923A2

公开(公告)日：2012-11-15

申请号：PCT/US2012/037255

申请日：2012-05-10

Applicant: ALCATEL LUCENT ,  HOUTSMA, Vincent E. ,  WEIMANN, Nils G.

Inventor： HOUTSMA, Vincent E. ,  WEIMANN, Nils G.

IPC: H04B10/06

CPC classification number: H04B10/63 ,  H04B10/611 ,  H04B10/613 ,  H04B10/6164 ,  H04B10/6165 ,  H04B10/64

Abstract: An optical receiver that uses a coherent optical quadrature-detection scheme to demodulate an amplitude-modulated optical input signal in a manner that enables the use of a free-running optical local-oscillator source. The optical receiver employs a signal combiner that combines, into an electrical output signal, the in-phase and quadrature-phase electrical signals generated as a result of the quadrature detection of the optical input signal. Depending on the frequency offset between the local- oscillator signal and the input signal, the electrical output signal produced by the signal combiner can be a desired baseband signal or an intermediate-frequency signal. The latter signal can be demodulated to recover the baseband signal in a relatively straightforward manner, e.g., using a conventional intermediate-frequency electrical demodulator coupled to the signal combiner.

Abstract translation: 一种光接收机，其使用相干光正交检测方案以能够使用自由运行的光本地振荡器源的方式解调幅度调制的光输入信号。 光接收机采用将由光输入信号正交检测结果产生的同相和正交相电信号组合成电输出信号的信号组合器。 根据本地振荡器信号和输入信号之间的频率偏移，由信号组合器产生的电输出信号可以是期望的基带信号或中频信号。 后一个信号可以被解调以以相对直接的方式恢复基带信号，例如使用耦合到信号组合器的常规中频电解调器。

公开(公告)号：WO2012154923A3

公开(公告)日：2013-01-24

申请号：PCT/US2012037255

申请日：2012-05-10

Applicant: ALCATEL LUCENT ,  HOUTSMA VINCENT E ,  WEIMANN NILS G

Inventor： HOUTSMA VINCENT E ,  WEIMANN NILS G

CPC classification number: H04B10/63 ,  H04B10/611 ,  H04B10/613 ,  H04B10/6164 ,  H04B10/6165 ,  H04B10/64

Abstract: An optical receiver that uses a coherent optical quadrature-detection scheme to demodulate an amplitude-modulated optical input signal in a manner that enables the use of a free-running optical local-oscillator source. The optical receiver employs a signal combiner that combines, into an electrical output signal, the in-phase and quadrature-phase electrical signals generated as a result of the quadrature detection of the optical input signal. Depending on the frequency offset between the local- oscillator signal and the input signal, the electrical output signal produced by the signal combiner can be a desired baseband signal or an intermediate-frequency signal. The latter signal can be demodulated to recover the baseband signal in a relatively straightforward manner, e.g., using a conventional intermediate-frequency electrical demodulator coupled to the signal combiner.

Abstract translation: 一种光接收机，其使用相干光正交检测方案以能够使用自由运行的光本地振荡器源的方式解调幅度调制的光输入信号。 光接收机采用将由光输入信号进行正交检测而产生的同相和正交相电信号组合成电输出信号的信号组合器。 根据本地振荡器信号和输入信号之间的频率偏移，由信号组合器产生的电输出信号可以是期望的基带信号或中频信号。 后一个信号可以被解调以以相对直接的方式恢复基带信号，例如使用耦合到信号组合器的常规中频电解调器。