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1. 发明授权

US5963034A Electro-optic electromagnetic field sensor system with optical bias adjustment 失效
标题翻译：光电电磁场传感器系统，具有光偏置调节功能
公开(公告)号：US5963034A
公开(公告)日：1999-10-05
申请号：US975349
申请日：1997-11-20
申请人： Amaresh Mahapatra , Vincent E. Stenger
发明人： Amaresh Mahapatra , Vincent E. Stenger
IPC分类号： G01R29/08 , G01R33/032 , G01R33/02
CPC分类号： G01R29/0885 , G01R33/032
摘要： An electro-optic electromagnetic field sensor system includes an electro-optic sensor located at an electromagnetic field sensing site for detecting an intensity of an electromagnetic field. The sensor changes an optical measuring signal received from a laser source to an optical sensor signal representative of the electromagnetic field intensity. An optical bias adjust unit optically coupled to the laser source adjusts the bias operating point of the electro-optic sensor responsive to an electrical bias adjust signal which includes a test signal component. A detector optically coupled to the electro-optic sensor converts the optical sensor signal to an electrical sensor signal and detects a feedback signal indicative of the transfer function of the electro-optic sensor operating on the test signal component. A bias control circuit electrically coupled to the optical bias adjust unit generates the bias adjust signal responsive to the feedback signal. An optical input fiber couples the optical measuring signal from the laser source to the electro-optic sensor and an optical output fiber couples the optical sensor signal to the detector.
摘要翻译：电光电磁场传感器系统包括位于电磁场感测位置的用于检测电磁场强度的电光传感器。传感器将从激光源接收的光学测量信号改变为表示电磁场强度的光学传感器信号。光学耦合到激光源的光学偏置调节单元响应于包括测试信号分量的电偏置调整信号调节电光传感器的偏压工作点。光耦合到电光传感器的检测器将光学传感器信号转换成电传感器信号，并且检测表示在测试信号分量上运行的电光传感器的传递函数的反馈信号。电耦合到光偏置调节单元的偏置控制电路响应于反馈信号产生偏置调整信号。光学输入光纤将来自激光源的光学测量信号耦合到电光传感器，并且光输出光纤将光学传感器信号耦合到检测器。

2. 发明授权

US5875276A Guided wave device and method of fabrication thereof 失效
标题翻译：导波装置及其制造方法
公开(公告)号：US5875276A
公开(公告)日：1999-02-23
申请号：US639
申请日：1997-12-30
申请人： Amaresh Mahapatra , S. Anantha Narayanan
发明人： Amaresh Mahapatra , S. Anantha Narayanan
IPC分类号： G02B6/12 , G02B6/126 , G02B6/134 , G02B6/10 , H01L41/08
CPC分类号： G02B6/126 , G02B6/1342 , G02B2006/12147 , Y10T29/42 , Y10T29/49016 , Y10T29/49982
摘要： A method for diffusing titanium into a single-crystal lithium niobate substrate and guided wave devices produced therefrom provide improved mode match with coupled fibers. Preferably, the titanium diffusion occurs at a diffusion temperature for a time between about 8 hours and about 18 hours. Outdiffusion of lithium oxide is allowed to occur during titanium diffusion. The outdiffused region, typically at least about 25 .mu.m, is much deeper than the titanium diffusion depth, typically about 5-10 .mu.m.
摘要翻译：将钛扩散到单晶铌酸锂衬底中的方法和由其制造的导波装置提供与耦合光纤的改进的模式匹配。优选地，钛扩散在扩散温度下发生约8小时至约18小时之间的时间。在钛扩散期间允许发生氧化锂的扩散。通常至少约25微米的超扩散区域比钛扩散深度深一些，通常约5-10微米。

3. 发明授权

US5834055A Guided wave device and method of fabrication thereof 失效
标题翻译：导波装置及其制造方法
公开(公告)号：US5834055A
公开(公告)日：1998-11-10
申请号：US521608
申请日：1995-08-30
申请人： Amaresh Mahapatra , S. Anantha Narayanan
发明人： Amaresh Mahapatra , S. Anantha Narayanan
IPC分类号： G02B6/12 , G02B6/126 , G02B6/134 , B05D5/06
CPC分类号： G02B6/126 , G02B6/1342 , G02B2006/12147
摘要： A method for co-diffusing titanium and aluminum into a single-crystal lithium niobate substrate and guided wave devices produced therefrom are provided. Titanium diffused into the substrate forms a light guiding region. A layer of aluminum deposited over the light guiding region and diffused into the substrate buries the light guiding region below the substrate surface. In an alternate embodiment, a layer of aluminum forms a mode shaping region which surrounds the light guiding region on two sides. The mode shaping region has ordinary and extraordinary indices of refraction less than the substrate such that mode mismatch between a device fabricated thereby and an externally coupled fiber is reduced. The aluminum can be diffused into LiNbO.sub.3 at a much lower temperature without affecting diffused titanium guides. Preferably, the titanium diffusion occurs at about 1000.degree. to about 1100.degree. C. while further aluminum diffusion occurs at a lower temperature in the range of about 900.degree. to 950.degree. C.
摘要翻译：提供了将钛和铝共同扩散到单晶铌酸锂衬底和由其制造的导波器件的方法。扩散到基板中的钛形成导光区域。沉积在导光区域上并扩散到基板中的铝层将导光区域埋在基板表面下方。在替代实施例中，铝层形成围绕两侧的导光区域的模式整形区域。模式整形区域具有小于衬底的普通和非凡的折射率，使得由此制造的器件与外部耦合的光纤之间的模式失配减小。铝可以在低得多的温度下扩散到LiNbO3中，而不会影响扩散的钛导轨。优选地，钛扩散发生在约1000℃至约1100℃，而在约900℃至950℃的较低温度下发生进一步的铝扩散。

4. 发明授权

US5889900A Integrated optic tunable filters and their methods of fabrication and use 失效
标题翻译：集成光可调谐滤波器及其制造和使用方法
公开(公告)号：US5889900A
公开(公告)日：1999-03-30
申请号：US857633
申请日：1997-05-16
申请人： Peter F. Hallemeier
发明人： Peter F. Hallemeier
IPC分类号： G02B6/12 , G02B6/126 , G02F1/035 , G02B6/00 , H04J14/06
CPC分类号： G02B6/126 , G02B6/12007 , G02F1/035 , G02B2006/12116 , G02B2006/12159 , G02F2203/055
摘要： Integrated optic tunable filters (IOTF) which for operation in many different wavelength ranges with different spectral properties. The IOTFs have one or more stages and/or channels formed in birefringent substrates and operate via polarization interferometric effects. Manufacture is via the use of variants of well-known processes used for making high speed integrated optic modulators. The IOTFs are for use in fiber-optic systems, although they can also be implemented in optic systems which are not fiber-optic. Other applications include wavelength division multiplexing, spectral analysis, and source output conditioning. Filtering may be active through the use of externally applied heat, stress, or electric fields.
摘要翻译：集成光学可调谐滤波器（IOTF），用于在具有不同光谱特性的许多不同波长范围内运行。 IOTF具有在双折射衬底中形成的一个或多个级和/或沟道，并通过极化干涉效应进行操作。制造是通过使用用于制造高速集成光学调制器的众所周知的方法的变体。 IOTF用于光纤系统，尽管它们也可以在不是光纤的光学系统中实现。其他应用包括波分复用，光谱分析和源输出调节。通过使用外部施加的热量，应力或电场，过滤可能是有效的。

5. 发明授权

US5749132A Method of fabrication an optical waveguide 失效
标题翻译：制造光波导的方法
公开(公告)号：US5749132A
公开(公告)日：1998-05-12
申请号：US602698
申请日：1996-02-16
申请人： Amaresh Mahapatra , S. Anantha Narayanan
发明人： Amaresh Mahapatra , S. Anantha Narayanan
IPC分类号： G02B6/12 , G02B6/126 , G02B6/134 , H01L41/08 , G02B6/10
CPC分类号： G02B6/126 , G02B6/1342 , G02B2006/12147 , Y10T29/42 , Y10T29/49016 , Y10T29/49982
摘要： A method for diffusing titanium into a single-crystal lithium niobate substrate and guided wave devices produced therefrom provide improved mode match with coupled fibers. Preferably, the titanium diffusion occurs at a diffusion temperature for a time between about 8 hours and about 18 hours. Outdiffusion of lithium oxide is allowed to occur during titanium diffusion. The outdiffused region, typically at least about 25 .mu.m, is much deeper than the titanium diffusion depth, typically about 5-10 .mu.m.
摘要翻译：将钛扩散到单晶铌酸锂衬底中的方法和由其制造的导波装置提供与耦合光纤的改进的模式匹配。优选地，钛扩散在扩散温度下发生约8小时至约18小时之间的时间。在钛扩散期间允许发生氧化锂的扩散。通常至少约25微米的超扩散区域比钛扩散深度深一些，通常约5-10微米。

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