Germanate glass core fiber GDF-MM-8/125-98
Higly Ge-doped silica fibers are used for variety of nonlinear applications.
Please see frequently asked questions below.
Typical loss spectrum
High germania core fiber
|Core diameter, µm||8 x 7 (elliptical)|
|Clading diameter, µm||125 ± 1|
|Coating diameter, µm||260 ± 10|
|GeO2 concentration, %||98|
|Cutoff wavelength, µm||~ 0.7|
|Attenuation (at 1550nm), dB/km||200|
|Attenuation (at 2100nm), dB/km||110|
|Attenuation (at 2300nm), dB/km||200|
|Splicing loss with ordinary fiber, dB||~ 1|
FREQUENTLY ASKED QUESTIONS:
What kind of fibers are using to achieve low coupling loss? And how does the fiber compare to standard SMF in terms of softening temperature?
We do not have detailed instructions on the technology of splicing fibers with core of germanate glass with standard silica fibers of the SMF-28 type. By means of trial and error method you have to achieve loss values in the range 0.3-0.8 dB (most of the users of these fibers did it). Maybe you can find some general ideas in papers by Huang (Opt Eng) and Aydin (Opt Exp).
FORC PUBLICATIONS OF GERMANATE GLASS CORE FIBERS
Publication: Vol. 27, No. 20 / 30 September 2019 / Optics Express. Autor: YANHONG LI, TUANJIE DU, BIN XU, HUIYING XU, ZHIPING CAI, VALERY M. MASHINSKY, AND ZHENGQIAN LUO
Publication: Vol. 27, No. 24 / 25 November 2019 / Optics Express. Autor: TUANJIE DU,YANHONG LI,HONGJIAN WANG,ZHIHAO CHEN,VALERY M. MASHINSKY, AND ZHENGQIAN LUO
Publication: Laser Phys. Lett. 9, No. 3, 219-222 (2012). Author: V. A. Kamynin, A. S. Kurkov, V. M. Mashinsky
Journal: LIGHTWAVE TECHNOLOGY, VOL. 23, NO. 11, NOVEMBER 2005. Autor: Evgeny M. Dianov, Member, IEEE, and Valery M. Mashinsky
Publication: OPTICS LETTERS / Vol. 29, No. 22 / November 15, 2004. Autor: V. M. Mashinsky, V. B. Neustruev, V. V. Dvoyrin, S. A. Vasiliev, O. I. Medvedkov, I. A. Bufetov, A. V. Shubin, A. N. Guryanov, V. F. Khopin, and M. Yu. Salgansky and E. M. Dianov
Publication: ECOC 2004, Autor: M.M.Bubnov