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公开(公告)号：US11933605B2
公开(公告)日：2024-03-19
申请号：US17577315
申请日：2022-01-17
发明人： Fatih Yaman , Hussam Batshon , Shinsuke Fujisawa , Kohei Nakamura , Takanori Inoue , Eduardo Mateo Rodriguez , Yoshihisa Inada
CPC分类号： G01B11/272 , G01M11/33
摘要： Aspects of the present disclosure describe estimating/measuring core-cladding concentricity error in optical fibers. In sharp contrast to the prior art, our inventive method is based on measuring a seemingly unrelated property of fibers called guided acoustic wave Brillouin scattering (GAWBS). As we shall show and describe, by analyzing this GAWBS property we advantageously determine what level of CCCE is exhibited by the optical fiber.
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2.发明授权公开(公告)号：US11467061B2
公开(公告)日：2022-10-11
申请号：US17341033
申请日：2021-06-07
发明人： Fatih Yaman , Eduardo Mateo Rodriguez , Shinsuke Fujisawa , Hussam Batshon , Kohei Nakamura , Takanori Inoue , Yoshihisa Inada , Takaaki Ogata
IPC分类号： G01M11/00
摘要： Aspects of the present disclosure describe a method for estimating mode field distribution in optical fibers from guided acoustic-wave Brillouin scattering wherein light for which the optical mode-field distribution is determined remains in the optical fibers and the distribution is made for light inside the fiber, and not at a fiber/air interface or other perturbation points to the fiber resulting in a more accurate representation of the optical mode-field distribution in the fiber. Since light is always in the fiber during the determination, no complicated fiber preparation steps or procedures are required and the mode-field distribution is determined as an average distribution along the length of the fiber under test.
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公开(公告)号：US11270200B2
公开(公告)日：2022-03-08
申请号：US16285870
申请日：2019-02-26
发明人： Shaoliang Zhang , Fatih Yaman , Ting Wang , Eduardo Rodriguez , Yoshihisa Inada , Kohei Nakamura , Takanori Inoue
摘要： Aspects of the present disclosure describe a method for digital coherent transmission systems that advantageously provides low-complexity, single-step nonlinearity compensation based on artificial intelligence (AI) implemented in a deep neuron network (DNN).
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公开(公告)号：US09337868B2
公开(公告)日：2016-05-10
申请号：US14336074
申请日：2014-07-21
发明人： Shaoliang Zhang , Fatih Yaman , Yoshihisa Inada , Takaaki Ogata , Takanori Inoue
CPC分类号： H03M13/1111 , H03M13/256 , H03M13/2957 , H03M13/4138 , H04L1/005 , H04L1/0057 , H04L1/006 , H04L1/0064 , H04L1/0076
摘要： At a receiver side, to enhance the performance of concatenated LDPC and TCM coding, an iterative decoding between TCM decoder and LDPC decoder enables improvement in the reliability of received LLRs of each symbol after each iteration. A SOVA output of the TCM is used for LDPC decoding, and then the updated LLRs from LDPC decoder are further looped back to the TCM decoder for the next iteration. In such a manner, the decoding performance could be significantly improved after just several iterations.
摘要翻译： 在接收机侧，为了提高级联LDPC和TCM编码的性能，TCM解码器和LDPC解码器之间的迭代解码器能够在每次迭代后提高每个符号的接收LLR的可靠性。 TCM的SOVA输出用于LDPC解码，然后来自LDPC解码器的更新的LLR进一步循环回TCM解码器进行下一次迭代。 以这种方式，在几次迭代之后，解码性能可以显着提高。
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公开(公告)号：US11043786B2
公开(公告)日：2021-06-22
申请号：US15956284
申请日：2018-04-18
发明人： Fatih Yaman , Shaoliang Zhang , Eduardo Mateo Rodriguez , Kohei Nakamura , Yoshihisa Inada , Takanori Inoue
IPC分类号： H01S3/067 , G02B6/44 , G02B6/02 , H01S3/23 , H01S3/094 , H01S3/16 , H01S3/0941 , H01S5/10 , H01S5/20 , H01S5/40
摘要： Aspects of the present disclosure describe systems, methods, and structures that advantageously amplify optical signals through the effect of optical pump signals generated by a multicore laser diode and multicore rare-earth doped optical fiber in optical communication with a 3D waveguide structure and a multicore input signal fiber providing a plurality of optical signals for amplification.
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6.发明授权公开(公告)号：US10581216B2
公开(公告)日：2020-03-03
申请号：US15586209
申请日：2017-05-03
发明人： Fatih Yaman , Shaoliang Zhang , Eduardo Mateo Rodriquez , Takanori Inoue , Yoshihisa Inada , Takaaki Ogata
摘要： An optical communication substrate includes a plurality of cores to communicate optical signals; a rectangular input delivering a pump laser, and a shaped portion to combine the optical signals and the pump laser into a ring geometry at an output.
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7.发明授权公开(公告)号：US10340649B2
公开(公告)日：2019-07-02
申请号：US15912810
申请日：2018-03-06
摘要： Aspects of the present disclosure describe systems, methods, and structures for providing C-band and L-band transmission exhibiting increased power efficiency by diverting a portion of C-band optical energy to an input of L-band optical amplifiers (C-seeding) while optionally employing circulators to eliminate the need for optical isolators.
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8.发明申请公开(公告)号：US20180261968A1
公开(公告)日：2018-09-13
申请号：US15912810
申请日：2018-03-06
CPC分类号： H01S3/0677 , H01S3/06766 , H01S3/06787 , H01S3/10007 , H01S3/1608 , H01S3/2383 , H01S2301/02 , H04B10/294 , H04B10/2972 , H04J14/02
摘要： Aspects of the present disclosure describe systems, methods, and structures for providing C-band and L-band transmission exhibiting increased power efficiency by diverting a portion of C-band optical energy to an input of L-band optical amplifiers (C-seeding) while optionally employing circulators to eliminate the need for optical isolators.
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公开(公告)号：US11888583B2
公开(公告)日：2024-01-30
申请号：US17543616
申请日：2021-12-06
发明人： Fatih Yaman , Shinsuke Fujisawa , Hussam Batshon , Takigawa Yoshinari , Ryuji Aida , Takanori Inoue , Eduardo Rodriguez , Yoshihisa Inada
CPC分类号： H04J14/0221 , G02B6/4427 , H04Q11/0001 , G02B6/506
摘要： Aspects of the present disclosure describe systems, methods. and structures directed to an integrated 3-way branching unit switch module suitable for undersea application.
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公开(公告)号：US20150026541A1
公开(公告)日：2015-01-22
申请号：US14336074
申请日：2014-07-21
发明人： Shaoliang Zhang , Fatih Yaman , Yoshihisa Inada , Takaaki Ogata , Takanori Inoue
CPC分类号： H03M13/1111 , H03M13/256 , H03M13/2957 , H03M13/4138 , H04L1/005 , H04L1/0057 , H04L1/006 , H04L1/0064 , H04L1/0076
摘要： At a receiver side, to enhance the performance of concatenated LDPC and TCM coding, an iterative decoding between TCM decoder and LDPC decoder enables improvement in the reliability of received LLRs of each symbol after each iteration. A SOVA output of the TCM is used for LDPC decoding, and then the updated LLRs from LDPC decoder are further looped back to the TCM decoder for the next iteration. In such a manner, the decoding performance could be significantly improved after just several iterations.
摘要翻译： 在接收机侧，为了提高级联LDPC和TCM编码的性能，TCM解码器和LDPC解码器之间的迭代解码器能够在每次迭代后提高每个符号的接收LLR的可靠性。 TCM的SOVA输出用于LDPC解码，然后来自LDPC解码器的更新的LLR进一步循环回TCM解码器进行下一次迭代。 以这种方式，在几次迭代之后，解码性能可以显着提高。
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