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jun ichi nishizawa wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 biography toggle biography subsection 1 1 research 2 recognition 3 references 4 external links toggle the table of contents jun ichi nishizawa 13 languages مصرى تۆرکجه deutsch فارسی français 日本語 한국어 română русский simple english kiswahili українська 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia japanese physicist 1926 2018 jun ichi nishizawa 西澤 潤一 born september 12 1926 sendai miyagi prefecture japan died october 21 2018 2018 10 21 aged 92 sendai miyagi prefecture japan education tohoku university awards japan academy prize 1974 ieee jack a morton award 1983 order of culture 1989 ieee edison medal 2000 scientific career workplaces tohoku university iwate prefectural university tokyo metropolitan university sophia university layers of a pin diode the pin photodiode was invented by jun ichi nishizawa in 1950 jun ichi nishizawa 西澤 潤一 nishizawa jun ichi september 12 1926 october 21 2018 1 was a japanese engineer and inventor he is known for his electronic inventions since the 1950s including the pin diode static induction transistor static induction thyristor sit sith his inventions contributed to the development of internet technology and the information age 2 he was a professor at sophia university biography edit nishizawa was born in sendai japan on september 12 1926 he earned a b s in 1948 and a doctor of engineering degree in 1960 from tohoku university in 1953 he joined the research institute of electrical communication at tohoku university he became a professor there and was appointed director to two research institutes from 1990 to 1996 nishizawa served as the president of tohoku university he became the president of iwate prefectural university in 1998 research edit in 1950 the static induction transistor was invented by jun ichi nishizawa and y watanabe 3 the pin photodiode was also invented by nishizawa and his colleagues in 1950 4 in 1952 he invented the avalanche photodiode 5 he then invented a solid state maser in 1955 5 this was followed by his proposal for a semiconductor optical maser in 1957 a year before schawlow and townes s first paper on optical masers 5 6 7 while working at tohoku university he proposed fiber optic communication the use of optical fibers for optical communication in 1963 8 nishizawa invented other technologies in the 1960s that contributed to the development of optical fiber communications such as the graded index optical fiber as a channel for transmitting light from semiconductor lasers 9 10 he patented the graded index optical fiber in 1964 2 in 1971 he invented the static induction thyristor 5 11 recognition edit nishizawa was a life fellow of the ieee he is a fellow of several other institutions including the physical society the russian academy of sciences and the polish academy of sciences nishizawa was decorated with order of culture by the emperor of japan in 1989 12 he also received the japan academy prize 1974 12 ieee jack a morton award 1983 13 the honda prize 1986 and the laudise prize of the international organization for crystal growth 1989 14 ieee conferred the edison medal on him in 2000 15 and introduced the ieee jun ichi nishizawa medal in 2002 16 he has more than a thousand patents registered under his name 1 references edit 1 2 former tohoku u president junichi nishizawa known as mr semiconductor dies at 92 the mainichi october 26 2018 retrieved january 15 2019 1 2 the third industrial revolution occurred in sendai soh vehe international patent office japan patent attorneys association mccluskey f patrick podlesak thomas grzybowski richard eds 1996 high temperature electronics illustrated ed crc press p 82 isbn 9780849396236 dummer g w a 2013 electronic inventions and discoveries electronics from its earliest beginnings to the present day 3rd revised ed elsevier p 137 isbn 9781483145211 1 2 3 4 jun ichi nishizawa engineer sophia university special professor interview japan quality review 2011 nishizawa jun ichi december 2009 extension of frequencies from maser to laser proc jpn acad ser b phys biol sci 85 10 454 465 bibcode 2009pjab 85 454n doi 10 2183 pjab 85 454 pmc 3621550 pmid 20009378 schawlow arthur townes charles 1958 infrared and optical masers physical review 112 6 1940 1949 bibcode 1958phrv 112 1940s doi 10 1103 physrev 112 1940 nishizawa jun ichi suto ken 2004 terahertz wave generation and light amplification using raman effect in bhat k n dasgupta amitava eds physics of semiconductor devices new delhi india narosa publishing house p 27 isbn 81 7319 567 6 optical fiber sendai new archived from the original on september 29 2009 retrieved april 5 2009 kowalenko kathy june 1 2003 new medal honors japanese microelectrics industry leader institute of electrical and electronics engineers cite web cs1 maint deprecated archival service link verification needed dummer g w a 2013 electronic inventions and discoveries electronics from its earliest beginnings to the present day 3rd revised ed elsevier p 231 isbn 9781483145211 1 2 prize winners pdf tohoku university ieee jack a morton award recipients pdf ieee archived from the original pdf on november 17 2018 retrieved january 15 2019 prizes international organization for crystal growth archived from the original on november 25 2018 retrieved january 15 2019 ieee edison medal recipients pdf ieee archived from the original pdf on june 19 2010 ieee jun ichi nishizawa medal ieee archived from the original on april 6 2010 retrieved january 15 2019 external links edit jun ichi nishizawa biographical article on ieee global history network jun ichi nishizawa extension of frequencies from maser to laser proceedings of the japan academy ser b physical and biological sciences 85 10 2009 dec р 454 465 national library of medicine v t e ieee edison medal 1976 2000 murray joslin 1976 henri g busignies 1977 daniel e noble 1978 albert rose 1979 robert adler 1980 c chapin cutler 1981 nathan cohn 1982 herman p schwan 1983 eugene i gordon 1984 john d kraus 1985 james l flanagan 1986 robert a henle 1987 james ross macdonald 1988 nick holonyak jr 1989 archie w straiton 1990 john l moll 1991 george d forney 1992 james h pomerene 1993 leslie a geddes 1994 robert w lucky 1995 floyd dunn 1996 esther m conwell 1997 rolf landauer 1998 kees schouhamer immink 1999 jun ichi nishizawa 2000 v t e telecommunications history beacon broadcasting cable protection system cable tv communications satellite computer network data compression audio dct image video digital media internet video online video platform social media streaming drums edholm s law electrical telegraph fax heliographs hydraulic telegraph information age information revolution internet mass media mobile phone smartphone optical telecommunication optical telegraphy pager photophone prepaid mobile phone radio radiotelephone satellite communications semaphore phryctoria semiconductor device mosfet transistor smoke signals telecommunications history telautograph telegraphy teleprinter teletype telephone history the telephone cases television digital streaming undersea telegraph line videotelephony whistled language wireless revolution pioneers nasir ahmed edwin howard armstrong mohamed m atalla john logie baird paul baran john bardeen alexander graham bell emile berliner tim berners lee francis blake jagadish chandra bose charles bourseul walter houser brattain vint cerf claude chappe yogen dalal donald davies daniel davis jr amos dolbear thomas edison philo farnsworth reginald fessenden lee de forest elisha gray oliver heaviside robert hooke erna schneider hoover harold hopkins gardiner greene hubbard bob kahn dawon kahng charles k kao narinder singh kapany hedy lamarr roberto landell innocenzo manzetti guglielmo marconi robert metcalfe antonio meucci samuel morse jun ichi nishizawa charles grafton page radia perlman alexander stepanovich popov tivadar puskás johann philipp reis claude shannon almon brown strowger henry sutton charles sumner tainter nikola tesla camille tissot alfred vail thomas a watson charles wheatstone vladimir k zworykin internet pioneers transmission media coaxial cable fiber optic communication optical fiber free space optical communication internet molecular communication radio waves wireless transmission line telecommunication circuit network topology and switching bandwidth links network switching circuit packet list nodes terminal telephone exchange multiplexing space division frequency division time division polarization division orbital angular momentum code division concepts communication protocol computer network data transmission store and forward telecommunications equipment types of network cellular network ethernet isdn lan mobile ngn public switched telephone radio television telex uucp wan wireless network notable networks arpanet bitnet cyclades fidonet internet internet2 janet npl network tanet toasternet usenet locations africa americas north south antarctica asia europe oceania global telecommunications regulation bodies telecommunication portal category outline commons authority control databases international isni viaf gnd fast worldcat national united states france bnf data japan netherlands korea academics cinii scopus zbmath other idref retrieved from https en wikipedia org w index php title jun ichi_nishizawa oldid 1372539677 categories 1926 births 2018 deaths 20th century japanese physicists 20th century japanese inventors fellows of the ieee ieee edison medal recipients tohoku university alumni academic staff of tohoku university academic staff of sophia university recipients of the order of culture recipients of the order of the sacred treasure 1st class foreign members of the ussr academy of sciences foreign members of the russian academy of sciences scientists from sendai hidden categories articles with short description short description is different from wikidata use mdy dates from november 2015 articles with hcards articles containing japanese language text cs1 maint deprecated archival service all pages needing factual verification wikipedia articles needing factual verification from may 2017 this page was last edited on 1 september 2026 at 04 17 utc page was rendered with parsoid text is available under the 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