Simple assembly technique for single-mode optical fiber multi/demultiplexers
A new technique is proposed for assembling singlemode fiber multi/demultiplexers by an easy adjustment process using alignment‐free fiber collimators. This technique utilizes a jig to position the collimators and adopts a collimator rotation process to reduce the increase in assembly loss. According...
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| Published in | Electronics & communications in Japan. Part 2, Electronics Vol. 74; no. 4; pp. 40 - 48 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
New York
Wiley Subscription Services, Inc., A Wiley Company
1991
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| Online Access | Get full text |
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| Summary: | A new technique is proposed for assembling singlemode fiber multi/demultiplexers by an easy adjustment process using alignment‐free fiber collimators. This technique utilizes a jig to position the collimators and adopts a collimator rotation process to reduce the increase in assembly loss.
According to simulation and experiments, the assembly loss increase of a two‐channel multi/demultiplexer is confirmed to be 0.5 to 1.0 dB. Its value is half that of the multi/demultiplexer assembled without the easy adjustment process. A prototype multi/demultiplexer having 1.3‐and 1.5‐μm channels has been fabricated. The insertion loss of each channel was 1.8 dB and its deviation was within ±0.1 dB from 0 to 60d̀C. |
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| Bibliography: | ark:/67375/WNG-9PKRLBVT-G ArticleID:ECJB4420740405 istex:B45EC4D189DE9573617F7444F76A3FBC3400E569 received a B.E. degree in 1978 from Ibaraki University, Japan. He then joined NTT Electrical Communications Laboratories, Musashino, Japan, where from 1978 to 1984 he was engaged in the research and development of power semiconductor devices. Since 1984, he has been engaged in the research and development of optical components for fiber‐optic communication systems. He is currently with NTT Opto‐Electronics Laboratories. Mr. Kato is a member of the Institute of Electronics, Information, and Communication Engineers of Japan (I.E.I.C.E., Japan). received a B.E. degree in 1964 from Tokyo Institute of Technology, Tokyo. He then joined NTT Electrical Communications Laboratories, Musashino, Japan, where from 1964 to 1983 he was engaged in the research and development of passive components for electronic equipment. Since 1983, he has been engaged in the research and development of optical components for fiber‐optic communication systems. He is with NTT Opto‐electronics Laboratories. He is a member of the Institute of Electronics, Information, and Communication Engineers of Japan (I.E.I.C.E., Japan). joined NTT Electrical Communications Laboratories, Musashino, Japan, in 1962. Since then he has been engaged in the research and development of PCM‐FDM transmission system, digital data system, optical components for fiber‐optic communication systems and photonic communication network. He is with NTT Communication Switching Laboratories. He is a member of the Institute of Electronics, Information, and Communication Engineers of Japan (I.E.I.C.E., Japan). Kuniharu Kato Kouhei Hashimoto Isao Nishi |
| ISSN: | 8756-663X 1520-6432 |
| DOI: | 10.1002/ecjb.4420740405 |