发明名称 |
Plural wavelength optical fibre reflectometer |
摘要 |
A dual wavelength reflectometer for single mode fibre is provided with separate lasers (5, 6) with emission wavelengths at 1300 and 1550 nm whose outputs are combined using a single mode optical fibre wavelength multiplexer (7) of tapered coupler format. The combined output is fed to a single mode optical fibre beam splitter (9), also of tapered coupler format, which is constructed to act as a 3 dB splitter for both wavelengths. This beam splitter directs light from the lasers into the fibre under test (10) and back-scattered light from the test fibre n to a photodetector (11).
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申请公布号 |
US4737026(A) |
申请公布日期 |
1988.04.12 |
申请号 |
US19860902237 |
申请日期 |
1986.08.28 |
申请人 |
STC PLC |
发明人 |
DALGOUTTE, DAVID G.;ALLOS, TALAL I. Y. |
分类号 |
G02B6/00;G01M11/00;(IPC1-7):G01N21/88 |
主分类号 |
G02B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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