Bismuth-based Erbium-Doped
Fiber
for WDM optical communication
A revolutionary Erbium-Doped
Fiber (EDF) based on bismuth oxide host glass, developed and
marketed by Asahi Glass. |
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Fig.1 Cross section of Bi-EDF |
- Fig.2 Pigtailed Bi-EDF
- (Sample package)
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What is Bismuth-based Erbium-Doped
Fiber (Bi-EDF)?
Bi-EDF is an advanced erbium-doped
fiber which allows both compactness and great broadband transmission
capability (Extended L band and C+L band). These desirable features
have been made possible by a proprietary glass developed by Asahi
Glass.
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Fig.3 Next generation DWDM optical amplifier
employing Bi-EDF |
What makes Bi-EDF so important?
- To provide more capacity, next generation
DWDM systems will extend their spectral bandwidth besides boosting
optical modulation speed.
- Emerging metro optical network systems,
especially, require optical amplifiers that are more cost-effective,
smaller and more capable.
- Long length of silica EDFs are
used in today's L band amplifiers because these have been the
only technology available. Now however, the new Bi-EDF from Asahi
Glass can allow you not only to considerably shorten the length
of EDF but to extend the spectral bandwidth (see Fig.4).
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Fig.4 Gain and NF spectrum of Bi-EDF for extended
L band |
Advantages
- Broadband (Extended L band and C+L
band)
- Compact - high erbium concentration
allows Bi-EDF to be used in over one order of magnitude shorter
length than conventional EDFs. Hence reducing nonlinear effect
and dispersion is also allowed.
- Higher
chemical, mechanical and thermal durability compared with other
broadband candidate materials (e.g. Tellurite, Fluoride glasses).
- Fusion splicing is available with
modified commercially availabe fusion splicers.
Applications
- L band/ extended L band amplifiers
- Broad - C+L band amplifiers
- Ultra-compact amplifiers for metro
areas
- Short pulse/ high speed signal amplification
- Broad ASE sources
Catalogues
20-09-2002
Extended L band EDF T1L  (28KB)
Technical news
10-10-2002 Technical
bulletin rev.5.00 (209KB)
Related papers
- N. Sugimoto et al., OAA2002, PD5,
2002
- N. Sugimoto, J. Am. Ceram. Soc.,
85, pp. 1083-88, 2002
- Y. Kuroiwa et al., OFC 2001, TuI5,
2001
- N. Sugimoto et al., OAA2000, PD3,
2000
Contact
For your inquiries about this product,
please click here
.
New Business
Development & Tech. Planning Div.
Asahi Glass Company
1-12-1,
Yurakucho, Chiyoda-ku, TOKYO 100-8405, Japan
TEL +81-3-3218-5804 FAX
+81-3-3218-7802
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