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    • 11. 发明授权
    • Optical spectrum analyzer with continuously rotating tunable filter
    • 具有连续旋转可调滤波器的光谱分析仪
    • US08953161B2
    • 2015-02-10
    • US13668463
    • 2012-11-05
    • Yung-Chieh HsiehChiayu Ai
    • Yung-Chieh HsiehChiayu Ai
    • G01J3/28
    • G01J3/32G01J3/06G01J3/14G01J3/18G01J2003/1243
    • An optical spectrum analyzer is implemented with a detector combined with a tunable filter mounted on a stage capable of 360-degree rotation at a constant velocity. Because of the constant rate of angular change, different portions of the input spectrum are detected at each increment of time as a function of filter position, which can be easily measured with an encoder for synchronization purposes. The unidirectional motion of the mirror permits operation at very high speeds with great mechanical reliability. The same improvements may be obtained using a diffraction grating or a prism, in which case the detector or an intervening mirror may be rotated instead of the grating or prism.
    • 光谱分析仪采用与安装在能够以恒定速度360度旋转的平台上的可调滤波器组合的检测器。 由于角度变化的恒定速率,输入频谱的不同部分在每个增量时间上被检测为滤波器位置的函数,这可以通过编码器容易地用于同步目的来测量。 镜子的单向运动允许以非常高的速度运行,具有很大的机械可靠性。 可以使用衍射光栅或棱镜获得相同的改进,在这种情况下,可以旋转检测器或中间镜来代替光栅或棱镜。
    • 12. 发明授权
    • Step-phase interferometric optical interleaver
    • 步进干涉光学交织器
    • US07408713B1
    • 2008-08-05
    • US10338465
    • 2003-01-08
    • Yung-Chieh HsiehChiayu Ai
    • Yung-Chieh HsiehChiayu Ai
    • G02B27/00G01B9/02
    • H04J14/02G02B6/2813G02B6/29344G02B6/29358
    • The cavity in the mirror arm of a conventional interleaver is replaced by a wedge integral with the beamsplitter structure of the interleaver. Thus, the light reflected from the AR-coated surface of the wedge is dispersed away from the optics of the device. The beam emerging from the wedge surface is directed toward a tilted mirror that reflects it totally on-axis. As a result of the diversion of the light reflected from the wedge surface and the non-parallel disposition of the wedge surface with respect to the mirror, phase errors are virtually eliminated. In another embodiment, a second wedge is used with a second antireflective surface disposed in parallel to the first wedge's antireflective surface, and with a mirror normal to the optical axis of the device.
    • 常规交织器的镜臂中的空腔由与交织器的分束器结构集成的楔形物代替。 因此,从AR的被涂覆的表面反射的光被分散远离装置的光学元件。 从楔形表面出射的光束指向一个倾斜的反射镜,将其完全反射在轴上。 由于从楔形表面反射的光的转移和楔形表面相对于反射镜的非平行布置,实际上消除了相位误差。 在另一个实施例中,第二楔形物与第二抗反射表面一起使用,第二抗反射表面平行于第一楔形物的抗反射表面,并具有垂直于装置的光轴的反射镜。
    • 13. 发明授权
    • Bandwidth enhancement device
    • 带宽增强设备
    • US07092162B1
    • 2006-08-15
    • US11200932
    • 2005-08-09
    • Yung-Chieh HsiehChiayu Ai
    • Yung-Chieh HsiehChiayu Ai
    • B02B5/28
    • G02B5/284G02B6/29311G02B6/29358
    • An optical cavity is combined with a MUX or a de-MUX device having substantially the same free-spectral range in order to enhance the bandwidth of the device. The optical cavity can be tuned to shift the frequencies of maximum insertion loss to match the center frequency of each channel. The reflectivities of the reflective surfaces of the cavity are judiciously selected to produce the insertion-loss spectrum needed to optimize the desired result. Multiple cavities can be used in series to refine the shape of the pass-band spectrum. A frequency window is used to fine tune the free-spectral range of the cavity and to shift the peaks of its insertion-loss spectrum to the desired frequencies. Inner and outer cavity surfaces are oriented to eliminate interference from secondary reflections.
    • 光学腔与具有基本上相同的自由光谱范围的MUX或解复用器件组合,以便增强器件的带宽。 可以调整光腔以使最大插入损耗的频率与每个通道的中心频率相匹配。 明智地选择腔的反射表面的反射率以产生优化所需结果所需的插入损耗谱。 可以串联使用多个空腔来细化通带光谱的形状。 频率窗用于微调空腔的自由光谱范围,并将其插入损耗谱的峰值移动到所需的频率。 内外表面被定向以消除二次反射的干扰。
    • 14. 发明授权
    • Wide range tunable filter
    • 宽范围可调滤波器
    • US06714743B2
    • 2004-03-30
    • US09813052
    • 2001-03-19
    • Yung-Chieh HsiehChiayu AiChang-Tsung Lin
    • Yung-Chieh HsiehChiayu AiChang-Tsung Lin
    • H04J1406
    • G02B6/29367G02B6/29395
    • A wide range tunable filter is provided. A randomly polarized incoming beam is converted into two orthogonally polarized beams. A ½ wave plate and filter block turns these two beams into four beams. Two of the four beams have a single range of wavelengths and two beams have the remaining wavelengths. Each pair of beams is orthogonally polarized. A ½ wave plate and birefringent crystal positioned after the filter block combine the two beams having the single range of wavelengths and combines the two beams having the remaining wavelengths. The invention includes a thermal compensator to correct the angle of the filter with respect to the incident light.
    • 提供了一个宽范围的可调滤波器。 随机极化的入射光束被转换为两个正交偏振光束。 1/2波片和滤波器块将这两个波束变成四个波束。 四个光束中的两个具有单个波长范围,并且两个光束具有剩余的波长。 每对光束正交极化。 位于滤波器块之后的1/2波片和双折射晶体组合具有单个波长范围的两个波束,并组合具有剩余波长的两个波束。 本发明包括一个用于校正过滤器相对于入射光的角度的热补偿器。
    • 16. 发明授权
    • Rhomb beam splitter in optical communication
    • Rhomb分光器在光通信
    • US08174756B1
    • 2012-05-08
    • US13287106
    • 2011-11-01
    • Yung-Chieh Hsieh
    • Yung-Chieh Hsieh
    • G02F2/00G02B1/10
    • G02B6/29367
    • Rhomb beam splitters are used to implement various optical demodulators, in particular PSK and DPSK demodulators. The parallel beam-splitting and reflective surfaces of the rhomb structure produce reflection and transmission beams that exit the beam splitter parallel to one another and with a relative phase shift determined by the distance between the surfaces. These features afford the advantages of low cost, compactness, easily tunable, and temperature-insensitive optical structures for constructing a variety of optical demodulators.
    • Rhomb分束器用于实现各种光解调器,特别是PSK和DPSK解调器。 菱形结构的平行光束分离和反射表面产生反射和透射光束,它们彼此平行地离开光束分离器,并具有由表面之间的距离确定的相对相移。 这些特征提供了低成本,紧凑性,易于调节和用于构造各种光学解调器的温度不敏感的光学结构的优点。
    • 20. 发明授权
    • Single-package dual optical-function device
    • 单包双光功能器件
    • US08929700B2
    • 2015-01-06
    • US13450455
    • 2012-04-18
    • Yung-Chieh Hsieh
    • Yung-Chieh Hsieh
    • G02B6/32G02B6/293
    • G02B6/29358G02B6/32
    • A four-fiber collimator is coupled to the optics of a single interleaver to produce the functionality of two co-packaged interleavers. Two fibers of the collimator are coupled to the core optics of a single interleaver to produce two pairs of output beams. The other two fibers of the collimators are coupled to receive the reflection output beams. The geometry of the optical fibers in the bundle is controlled to produce interleaver outputs with no offset. In another embodiment two fibers of the four-fiber collimator are coupled as inputs to and the other two fibers as outputs from a Fabry-Perot etalon. The geometry of the fibers and the focal length of the collimator are controlled to produce two outputs with peaks offset by a predetermined amount.
    • 四光纤准直器耦合到单个交织器的光学器件,以产生两个共包装交织器的功能。 准直器的两个光纤耦合到单个交织器的核心光学器件,以产生两对输出光束。 准直器的另外两个光纤被耦合以接收反射输出光束。 束中的光纤的几何形状被控制以产生没有偏移的交织器输出。 在另一个实施例中,四光纤准直器的两个光纤作为输入耦合到另外两根光纤作为法布里 - 珀罗标准具的输出。 控制光纤的几何形状和准直器的焦距以产生两个偏移预定量的峰值输出。