Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Munehisa Tamura"'
Publikováno v:
Journal of Lightwave Technology. 32:2841-2848
The extension of an optical transmission system with a combination of quadrature phase-shift keying and a digital coherent technique has led to the need for economical and compact receivers. In this paper, we demonstrate the heterogeneous integration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9edd3fbc90748b8ff7c7dcafaa8b9e6a
https://doi.org/10.1109/jlt.2014.2315790
https://doi.org/10.1109/jlt.2014.2315790
Publikováno v:
Optical and Quantum Electronics. 28:487-493
We report CW operation of a GaInAsP/InP multiple-reflector microcavity (MRMC) laser operated at fairly low threshold current density. The threshold current density with broad contact (stripe widthW=240 μm, cavity lengthL=60 μm) under pulsed operati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccee4cf0733bdc5148c63755ff72b189
https://doi.org/10.1007/bf00943616
https://doi.org/10.1007/bf00943616
Autor:
Yoshifumi Muramoto, Yu Kurata, Munehisa Tamura, Ryoichi Kasahara, Shinichi Aozasa, Yusuke Nasu, Satoshi Tsunashima, Haruki Yokoyama, Takayuki Mizuno
Publikováno v:
Optics express. 20(26)
To realize a DP-QPSK receiver PLC, we heterogeneously integrated eight high-speed PDs on a silica-based PLC platform with a PBS, 90-degree optical hybrids and a VOA. The use of a 2.5%-Δ waveguide reduced the receiver PLC size to 11 mm x 11 mm. We su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f6bc0ccfec9e983ba68996bf277a864
https://pubmed.ncbi.nlm.nih.gov/23262861
https://pubmed.ncbi.nlm.nih.gov/23262861
Publikováno v:
37th European Conference and Exposition on Optical Communications.
We demonstrate the first heterogeneous integration of high-speed InP PDs on a silica-based PLC platform. 28 Gbaud QPSK signal detection is realized using a coherent detector integrated with four PDs and a 90° optical hybrid.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bd2675459dbf52fec23f361e2d0d004
https://doi.org/10.1364/ecoc.2011.th.12.lesaleve.5
https://doi.org/10.1364/ecoc.2011.th.12.lesaleve.5
Publikováno v:
2008 34th European Conference on Optical Communication.
We demonstrated an ultra small 100 GHz 40 ch athermal AWG module based on 2.5%-Delta waveguides. The module is 30 times 10 times 5 mm with an insertion loss of 2.0-2.9 dB.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b84e7eb5909458c92d10ed4b394c94a
https://doi.org/10.1109/ecoc.2008.4729153
https://doi.org/10.1109/ecoc.2008.4729153
Publikováno v:
31st European Conference on Optical Communications (ECOC 2005).
We report experimental results for small-angle waveguide crossings designed with our recently proposed wavefront matching method. We successfully obtained lower loss and crosstalk values than conventional straight waveguide crossings. (2 pages)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50de9fb4eceb20b75617e3d2efb81c2c
https://doi.org/10.1049/cp:20050430
https://doi.org/10.1049/cp:20050430
Autor:
Ki-Chul Shin, Shigeo Tamura, S. Kurihashi, Shigehisa Arai, Munehisa Tamura, N. Serizawa, A. Kasukawa
Publikováno v:
IEEE Photonics Technology Letters. 7:1119-1121
We propose and demonstrate a new type of semiconductor laser having multiple reflector microcavities for the purpose of low threshold current operation. Very uniform multiple reflector microcavity structure was fabricated by electron beam (EB) lithog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c07603a8dd29f087883eff8454384df
https://doi.org/10.1109/68.466562
https://doi.org/10.1109/68.466562
Publikováno v:
Proceedings of 8th International Conference on Indium Phosphide and Related Materials.
Temperature dependences of 1.5 /spl mu/m wavelength GaInAsP/InP compressively-strained (CS) single-quantum-well lasers with quantum-wire as active region (15-28 nm) were measured and compared with those of quantum-film lasers fabricated on the same w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bff8f677bf2c10367de604d704139cbf
https://doi.org/10.1109/iciprm.1996.492399
https://doi.org/10.1109/iciprm.1996.492399
Autor:
Xue-Ying Jia, T. Kojima, Munehisa Tamura, Hiroyuki Nakaya, S. Tanaka, Gerd Bacher, T. Ando, Shigeo Tamura, Shigehisa Arai
Publikováno v:
Conference Proceedings. 1997 International Conference on Indium Phosphide and Related Materials.
Polarization dependence of 1.55 /spl mu/m wavelength GaInAsP/InP compressively-strained (CS) quantum-wire laser structures assisted by a quantum-film was measured and compared with quantum-film laser structures fabricated on the same wafer. As a resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fc54277bc211569d01a1d27c4472042
https://doi.org/10.1109/iciprm.1997.600104
https://doi.org/10.1109/iciprm.1997.600104
Publikováno v:
Conference Proceedings. 1997 International Conference on Indium Phosphide and Related Materials.
We investigated photoluminescence (PL) intensity dependence on the width of GaInAsP/InP wire structures, which were fabricated by an electron cyclotron resonance dry etching (ECR-dry etching) using a mixture of Cl/sub 2//H/sub 2/ (small amount of H/s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52aaf8c69ac1b25b197e90a9f6d6cf3e
https://doi.org/10.1109/iciprm.1997.600233
https://doi.org/10.1109/iciprm.1997.600233