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    • 3. 发明授权
    • Athermal DQPSK and/or DPSK demodulator
    • 高温DQPSK和/或DPSK解调器
    • US08792155B2
    • 2014-07-29
    • US13622656
    • 2012-09-19
    • Finisar Corporation
    • Huiping LiFan ChenXiaolin ChenFahua Lan
    • G02F2/00
    • H04B10/677
    • In some example embodiments, a demodulator may include an input polarization beam splitter (IPBS), input half waveplate (IHWP), cubical polarization beam splitter (CPBS), first reflector (R1), second reflector (R2), first quarter waveplate (QWP1), second quarter waveplate (QWP2), beam displacer (BD), output half waveplate (OHWP), and output polarization beam splitter (OPBS). The CPBS may be positioned to receive an output from IPBS. The IHWP may be positioned between IPBS and CPBS. The R1 may be positioned to receive and return a first output from CPBS. The QWP1 may be positioned between CPBS and R1. The R2 may be positioned to receive and return a second output from CPBS. The QWP2 may be positioned between CPBS and R2. The BD may be positioned to receive a third output from CPBS. The OPBS may be positioned to receive an output from BD. The OHWP may be positioned between BD and OPBS.
    • 在一些示例实施例中,解调器可以包括输入偏振分束器(IPBS),输入半波片(IHWP),立方偏振分束器(CPBS),第一反射器(R1),第二反射器(R2),第一四分之一波片(QWP1 ),第二四分之一波片(QWP2),光束置换器(BD),输出半波片(OHWP)和输出偏振分束器(OPBS)。 CPBS可以被定位成从IPBS接收输出。 IHWP可能位于IPBS和CPBS之间。 R1可以被定位成接收和返回CPBS的第一个输出。 QWP1可以位于CPBS和R1之间。 R2可以定位成从CPBS接收和返回第二个输出。 QWP2可能位于CPBS和R2之间。 BD可以被定位成从CPBS接收第三输出。 OPBS可以被定位成从BD接收输出。 OHWP可以位于BD和OPBS之间。
    • 4. 发明授权
    • DP-QPSK demodulator
    • DP-QPSK解调器
    • US08786938B2
    • 2014-07-22
    • US13740500
    • 2013-01-14
    • Finisar Corporation
    • Huiping LiXiaolin ChenFan ChenFahua Lan
    • G02F2/00
    • H04B10/615H04L27/223
    • In an embodiment, a demodulator includes first, second, third, fourth and fifth beam displacers, a half waveplate, and a quarter waveplate. The second beam displacer is positioned to receive an output from the first beam displacer. The third beam displacer is positioned to receive an output from the second beam displacer. The half waveplate is positioned to receive an output from the third beam displacer. The fourth beam displacer is positioned to receive an output from the half waveplate. The fifth beam displacer is positioned to receive an output from the fourth beam displacer. The quarter waveplate is positioned between the fourth beam displacer and the fifth beam displacer.
    • 在一个实施例中,解调器包括第一,第二,第三,第四和第五光束置换器,半波片和四分之一波片。 第二光束置换器被定位成接收来自第一光束置换器的输出。 第三光束置换器定位成接收来自第二光束置换器的输出。 半波片被定位成接收来自第三光束置换器的输出。 第四光束置换器定位成接收来自半波片的输出。 第五光束置换器被定位成接收来自第四光束置换器的输出。 四分之一波片位于第四光束置换器和第五光束置换器之间。