Tsis ntev los no, Lili Hu pab pawg tshawb fawb hauv Department of Advanced Laser thiab Optoelectronic Functional Materials, Shanghai Institute of Optics thiab Precision Machinery (SIPM), Suav Academy ntawm Kev Tshawb Fawb (CAS), tau tshaj tawm cov tswv yim tshiab raws li kev ua kom zoo ntawm lub zog ntawm Er -doped silicate fiber ua amplifier kom ntev L-band broadband. Cov txiaj ntsig kev tshawb fawb cuam tshuam tau luam tawm hauv Optics Letters nyob rau hauv lub npe ntawm "Er-doped silicate fiber amplifiers nyob rau hauv L-band nrog ca nce".
Txoj kev loj hlob sai ntawm cov ntaub ntawv loj thiab kev txawj ntse txawj ntse tau muab cov kev xav tau siab dua rau lub peev xwm ntawm qhov ntom ntom wavelength division multiplexers (DWDM) hauv kev sib txuas lus kho qhov muag tom ntej. Piv nrog rau cov laus tsim C-band (1530-1565 nm) erbium-doped fiber amplifier (EDFA), L-band ({5}} nm) EDFA tau dhau los ua ib tiam tshiab ntawm kev muaj peev xwm nthuav dav cov khoom siv kho qhov muag. Txawm li cas los xij, txoj kev loj hlob ntawm L-band EDFAs ntsib teeb meem thiab cov teeb meem: qhov nce ntawm Er-doped fibers yog txwv los ntawm qhov tsawg-yoj emission cross-section thiab mob siab rau lub xeev nqus, ua rau muaj qhov nce me me ntawm wavelengths ntau dua 1600 nm. . Yog li ntawd, yuav ua li cas los txhim kho qhov ntev-ntev nce ntawm Er-doped fiber ntau cov ntaub ntawv yog ib qho teeb meem kev tshawb fawb tseem ceeb uas yuav tsum tau daws rau L-band broadband amplifiers tam sim no.
Pab neeg tshawb fawb tau tshaj tawm cov tswv yim tshiab ntawm microscopic ion field zog modulation txoj kev rau kev nce qib thiab spectral shaping ntawm Er ions hauv silicate fiber matrix. Qhov ua tau ntawm silicate fiber ntau raws li qhov ntev-wavelength nce kev txhim kho matrix rau Er ions tau lees paub ob qho tib si theoretically thiab kev sim. Cov tswv yim tau txais txiaj ntsig zoo ntawm qhov tseem ceeb L-band nce kev txhim kho thiab nce kev ua kom zoo dua qub hauv Er-doped silicate fibers. Lub caij no, los ntawm kev siv tag nrho-fiber tswvyim ntawm heterogeneous fiber ntau fusion splicing, siv tsuas yog 1.5 m silicate fiber, qhov nce coefficient ntawm qhov ntev tshaj plaws wavelength ntawm 1625 nm hauv L-band yog 4.7 dB / m, uas zoo dua li ntawm quartz fiber ntau ntawm {{10}}.3 dB/m. Tsis tas li ntawd, qhov nce flatness ntawm cov fiber ntau hauv L-band yog 0.8 dB, uas zoo dua li cov quartz fiber ntau ntawm 5 dB. Piv nrog quartz fiber ntau, cov fiber ntau muaj qhov siab dopant concentration, Piv nrog quartz fiber ntau, cov fiber ntau no muaj cov doping siab concentration, luv siv ntev thiab loj nce coefficient, uas muab cov khoom tseem ceeb txhawb rau tiam tshiab ntawm L-band EDFA.
Txoj haujlwm no yog txhawb nqa los ntawm National Natural Science Foundation ntawm Tuam Tshoj thiab National Key Programs.
Fig. 1 L-band nce ntawm Er-doped silicate fiber
