for WDM optical communication
A revolutionary Erbium-Doped
Fiber (EDF) based on bismuth oxide host glass, developed and
marketed by Asahi Glass.
Fig.1 Cross section of Bi-EDF
- Fig.2 Pigtailed Bi-EDF
- (Sample package)
What is Bismuth-based Erbium-Doped
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
Fig.3 Next generation DWDM optical amplifier
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).
Fig.4 Gain and NF spectrum of Bi-EDF for extended
- Broadband (Extended L band and C+L
- 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.
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.
- L band/ extended L band amplifiers
- Broad - C+L band amplifiers
- Ultra-compact amplifiers for metro
- Short pulse/ high speed signal amplification
- Broad ASE sources
Extended L band EDF T1L (28KB)
bulletin rev.5.00 (209KB)
- N. Sugimoto et al., OAA2002, PD5,
- N. Sugimoto, J. Am. Ceram. Soc.,
85, pp. 1083-88, 2002
- Y. Kuroiwa et al., OFC 2001, TuI5,
- N. Sugimoto et al., OAA2000, PD3,
For your inquiries about this product,
please click here
Development & Tech. Planning Div.
Asahi Glass Company
Yurakucho, Chiyoda-ku, TOKYO 100-8405, Japan