Best-selling in Textbooks
Save on Textbooks
- AU $34.30Trending at AU $35.14
- AU $14.50Trending at AU $17.20
- AU $8.59Trending at AU $14.01
- AU $21.17Trending at AU $25.58
- AU $72.88Trending at AU $77.86
- AU $91.99Trending at AU $100.05
- AU $30.28Trending at AU $34.60
About this product
- DescriptionThe direct pumping of a Raman number amplifer (RFA) was attempted using an array of four 25W, number pigtailed diodes at 936nm, combined via a 7 channel number beam combiner. The initial attempt was conducted using a 1.8 km, 100 um core, GRIN number with an NA of .29 and attenuation 3.6 dB/km at 936nm. While amplification was t achieved, over 200mW of conversion was shown, with 10.4W of pump power and 3.5W of seed. This corresponds to an average conversion e ciency of 2.2%. The subsequent effort utilized a 2km long, 200um core, GRIN number, with NA of .27 and attenuation of 2.8dB/km at pump wavelength. Again, amplification was t achieved, but a gain of 80mW was present, with 3.5W of seed power and 14W of pump. This corresponds to an average conversion e ciency of 0.6% and only 2.5% of the coupled seed power. The final experiment attempted to solve the problem of coupling e ciency and high Raman threshold by utilizing a 50/250 dual- clad number, with NAs of .28 and .46 for the core and inner cladding, respectively. Again, amplification was t realized, as only 100mW of gain was present, with 25W of pump and 4.2W of coupled seed power, corresponding to 36% of the coupled seed, and an average conversion efficiency of only 0.4%. Although amplification was t achieved for any of the three numbers, gain was shown possible in all, showing that directly pumping an RFA with a diode source is possible.
- Author(s)C Baird
- Date of Publication03/10/2012
- FormatPaperback / softback
- SubjectEducation & Teaching
- Country of PublicationUnited States
- Weight136 g
- Width189 mm
- Height246 mm
- Spine4 mm
- Format DetailsTrade paperback (US),Unsewn / adhesive bound
This item doesn't belong on this page.
Thanks, we'll look into this.