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公开(公告)号：US20120182559A1
公开(公告)日：2012-07-19
申请号：US13348954
申请日：2012-01-12
申请人： Kentaro OSAWA , Hideharu MIKAMI
发明人： Kentaro OSAWA , Hideharu MIKAMI
IPC分类号： G01B9/02
CPC分类号： H04B10/556
摘要： A delay interferometer includes a half beam splitter and two pentagonal prisms disposed on a substrate. The half beam splitter branches light to be measured which travels substantially in parallel with the substrate into two branched light beams. The pentagonal prisms respectively reflect the respective branched light beams such that the optical axes of the branched light beams are moved in parallel in a direction substantially perpendicular to the substrate by reflection. The half beam splitter combines the branched light beams reflected by the pentagonal prisms to generate interference light beams.
摘要翻译： 延迟干涉仪包括半分光镜和设置在基底上的两个五边形棱镜。 半分束器将待测量的光基本上与基板平行地分散成两个分支的光束。 五边形棱镜分别反射相应的分支光束，使得分支光束的光轴在基本上垂直于基板的方向上通过反射平行移动。 半分光镜组合由五边形棱镜反射的分支光束以产生干涉光束。
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公开(公告)号：US20110080815A1
公开(公告)日：2011-04-07
申请号：US12893069
申请日：2010-09-29
IPC分类号： G11B20/00
CPC分类号： G11B7/0065 , G11B7/00781 , G11B7/128 , G11B7/24088
摘要： The present invention achieves an optical recording and regenerating apparatus focusing two opposed beams of light at a same place in an optical recording medium to record a standing wave generated by interference of the two beams of light. In the apparatus, phase information is recorded in the optical recording medium by a phase modulating means for modulating phase of one of the two beams of light. The generation reference light generated from a light source is allowed to interfere with regenerated light generated by projecting one of the two beams of light onto the optical recording medium to generate three or more beams of interfering light having different interference phases are simultaneously generated. The three or more beams of interfering light are then detected, and the phase modulated by the phase modulating means is demodulated from an output of the detector.
摘要翻译： 本发明实现了在光记录介质中的相同位置聚焦两个相对的光束的光学记录和再生装置，以记录由两束光的干涉产生的驻波。 在该装置中，通过用于调制两束光之一的相位的相位调制装置将相位信息记录在光学记录介质中。 从光源产生的生成参考光被允许同时产生通过将两个光束中的一个投影到光学记录介质上而产生三个或更多个具有不同干涉相位的干涉光束的再生光。 然后检测三个或更多个干涉光束，并且由相位调制装置调制的相位从检测器的输出解调。
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公开(公告)号：US20120008483A1
公开(公告)日：2012-01-12
申请号：US13040434
申请日：2011-03-04
申请人： Hideharu MIKAMI
发明人： Hideharu MIKAMI
IPC分类号： G11B7/135
CPC分类号： G11B7/005 , G11B7/0051 , G11B7/1356 , G11B7/1359 , G11B7/1381
摘要： Reference light for interference with signal light from an optical information recording medium is displaced and reflected by a corner cube prism or the like with high accuracy. The signal light and the displaced reference light are made parallel with each other with high accuracy. The signal light and the reference light are each split using a polarization splitter to generate interference light. Thus, regeneration signals are stabilized. Accordingly, an interference-type optical head and optical disc apparatus of higher quality than conventional ones can be provided.
摘要翻译： 用于干涉来自光学信息记录介质的信号光的参考光被高精度的角立方棱镜等偏移和反射。 信号光和偏移的参考光以高精度彼此平行。 信号光和参考光分别使用偏振分离器分离以产生干涉光。 因此，再生信号稳定。 因此，可以提供比传统的更高质量的干涉型光头和光盘装置。
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公开(公告)号：US20110085238A1
公开(公告)日：2011-04-14
申请号：US12896948
申请日：2010-10-04
申请人： Hiroyuki MINEMURA , Yumiko ANZAI , Hideharu MIKAMI
发明人： Hiroyuki MINEMURA , Yumiko ANZAI , Hideharu MIKAMI
CPC分类号： G02B5/3058 , G02B5/085 , H01Q1/38 , H01Q9/0407
摘要： The present invention provides a small and inexpensive optical element that integrates a reflecting mirror and a wave plate function. A reflecting wave plate is configured by arranging a periodic metal comb-like structure whose pitch is equal to or below a wavelength and a mirror structure with a distance equal to or below a coherence length.
摘要翻译： 本发明提供了一种集成反射镜和波片功能的小型且廉价的光学元件。 反射波片通过布置间距等于或低于波长的周期性金属梳状结构和距离等于或低于相干长度的反射镜结构来配置。
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5.发明申请公开(公告)号：US20110141867A1
公开(公告)日：2011-06-16
申请号：US12961571
申请日：2010-12-07
申请人： Hideharu MIKAMI , Harukazu Miyamoto
发明人： Hideharu MIKAMI , Harukazu Miyamoto
IPC分类号： G11B20/00
CPC分类号： G11B7/083 , G03H2001/0441 , G03H2210/562 , G11B7/00781 , G11B2007/00656
摘要： In a system of detecting an interference light with a light not irradiated onto an optical disc to increase the S/N ratio, it is difficult to stably acquire a reproduced signal with a simple configuration. Since the recording density is not improved, an improvement in transfer rate is difficult. In an optical information recording/reproducing apparatus where two optical beams face each other and are focused at the same place of a recording medium to record a standing wave developed by interference of the two optical beams, a phase difference of the two optical beams is modulated in a multiple stage and recorded. During reproduction, an interference light of a reproduced light from the recording medium and another reproduction reference light is detected as a reproduced signal, and a phase servo control stabilizing the phase of interference during reproduction by using a low frequency component of the reproduced signal is conducted.
摘要翻译： 在利用未照射到光盘上的光来检测干涉光以提高S / N比的系统中，难以以简单的结构稳定地获取再生信号。 由于记录密度没有改善，传输速率的提高是困难的。 在其中两个光束彼此面对并聚焦在记录介质的相同位置以记录由两个光束的干涉产生的驻波的光信息记录/再现装置中，两个光束的相位差被调制 在多个阶段并记录下来。 在再现期间，检测来自记录介质的再现光的干涉光和另一个再现参考光作为再现信号，并且通过使用再现信号的低频分量来进行稳定再现期间的干扰相位的相位伺服控制 。
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公开(公告)号：US20100329667A1
公开(公告)日：2010-12-30
申请号：US12826763
申请日：2010-06-30
申请人： Hideharu MIKAMI
发明人： Hideharu MIKAMI
CPC分类号： H04L27/223
摘要： In a delay line interferometer inside a demodulator, with respect to polarization states of two split beams of light to be interfered with each other, p polarization and s polarization are reversed by a half beam splitter and, further, again multiplexed by the half beam splitter used for splitting so that interference beams of light are generated.
摘要翻译： 在解调器内部的延迟线干涉仪中，相对于待彼此干扰的两束分束光的偏振状态，p偏振和s偏振被半分束器反转，并且还被半分束器 用于分裂，从而产生干涉光束。
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公开(公告)号：US20120008951A1
公开(公告)日：2012-01-12
申请号：US13176772
申请日：2011-07-06
申请人： Hideharu MIKAMI
发明人： Hideharu MIKAMI
CPC分类号： H04L27/223 , H04B10/613 , H04B10/614
摘要： In a free space optical system type demodulator of a phase shift keying signal, if a half beam splitter is used as a non-polarizing optical branching unit that is used when generating beams corresponding to I and Q channels or when multiplexing an interference light, control of a power branching ratio is difficult, and it is necessary to suppress phase shifts that are different depending on a polarization state of an input state, and thereby the demodulator becomes high cost. Moreover, since directions of branched lights are different, it is difficult to suppress a skew of the demodulator. In the present invention, the non-polarizing optical branching unit that is used when generating the beams corresponding to the I and Q channels and when multiplexing the interference light is realized using polarization rotating elements and polarization separating elements. Moreover, branched beams are substantially aligned.
摘要翻译： 在相移键控信号的自由空间光系统型解调器中，如果使用半分束器作为在产生与I和Q通道相对应的波束时使用的非偏振光分路单元，或者当复用干扰光时，控制 功率分支比是困难的，并且需要抑制根据输入状态的偏振状态而不同的相移，从而解调器变得高成本。 此外，由于分支灯的方向不同，难以抑制解调器的偏斜。 在本发明中，使用偏振光旋转元件和偏振分离元件来实现在产生与I和Q通道对应的光束时以及多路复用干涉光时使用的非偏振光分支单元。 此外，分支光束基本对齐。
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8.发明申请公开(公告)号：US20110235485A1
公开(公告)日：2011-09-29
申请号：US12985410
申请日：2011-01-06
申请人： Hideharu MIKAMI
发明人： Hideharu MIKAMI
IPC分类号： G11B7/125
CPC分类号： G11B7/0065 , G11B7/00781 , G11B7/1369 , G11B7/24044 , G11B7/2467 , G11B7/25
摘要： Multi-level recording is quite effective for attaining a larger capacity and a higher transfer rate in the case of an optical disk; however, with conventional technologies, a SIGNAL-TO-NOISE RATIO of a signal deteriorates along with an increase in a multi-level degree, creating a factor for limitations to the multi-level degree. In order to solve problems, when optical information is recorded by use of a standing wave occurring due to interference between two light beams, at least one of the two light beams is modulated in multi-stages. Further, at the time of regeneration, a regeneration reference beam is caused to interfere with respective polarization components of a regeneration beam, the polarization components being orthogonal to each other, thereby concurrently generating not less than three interference beams differing in interference phase from each other before being detected.
摘要翻译： 多级记录对于在光盘的情况下获得更大的容量和更高的传输速率是非常有效的; 然而，利用传统技术，信号的信号噪声比随着多级度的增加而恶化，从而产生了对多级程度的限制的因素。 为了解决问题，当通过使用由于两个光束之间的干涉而发生的驻波来记录光学信息时，两个光束中的至少一个被多级调制。 此外，在再生时，使再生参考光束与再生光束的各偏振分量相互干扰，偏振分量彼此正交，从而同时产生不少于干涉相位彼此不同的三个干涉光束 在被检测之前。
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公开(公告)号：US20110188850A1
公开(公告)日：2011-08-04
申请号：US12985385
申请日：2011-01-06
申请人： Hideharu MIKAMI , Taichi Kogure
发明人： Hideharu MIKAMI , Taichi Kogure
摘要： When designing a demodulator for a DPSK-modulated signal, it is required that optical phase modulation is performed fast and the demodulator has a long lifetime. To achieve this object, a delay line interferometer inside the demodulator performs adjustment of phase difference between two split lights caused to interfere, using a first optical phase modulation unit such as a Piezo actuator and a second optical phase modulation unit such as a heating element that operates slower in modulation speed than the first optical phase modulation unit and is slower in deterioration speed.
摘要翻译： 当设计用于DPSK调制信号的解调器时，需要快速执行光相位调制，并且解调器具有长的使用寿命。 为了实现该目的，解调器内部的延迟线干涉仪使用诸如压电致动器的第一光学相位调制单元和诸如加热元件的第二光学相位调制单元来执行引起干扰的两个分离光之间的相位差的调节， 调制速度比第一光学相位调制单元慢，并且在劣化速度较慢。
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