Akụkọ nyocha kachasị ọhụrụ nke laser nkwukọrịta oghere

Akụkọ nyocha kachasị ọhụrụ nkeoghere nkwurịta okwu laser

Usoro ntanetị nke satịlaịtị, yana mkpuchi ya zuru ụwa ọnụ, obere nkwụsịtụ na nnukwu bandwidth, aghọwo isi ntụziaka nke mmepe teknụzụ nkwurịta okwu n'ọdịnihu. Nkwurịta okwu laser oghere bụ teknụzụ bụ isi na mmepe nke usoro nkwukọrịta satịlaịtị.Semiconductor laserna-egosi nnukwu ngwa ngwa na sistemụ nkwurịta okwu laser oghere site na arụmọrụ ya dị elu, ogologo ndụ, obere nha, ịdị arọ dị arọ na njirimara modulation magburu onwe ya. Otú ọ dị, ụzarị anyanwụ nke mbara igwe, ụzarị mbara igwe galactic na ọnụ ọgụgụ dị ukwuu nke ike dị elu dị ka protons, electrons na ion dị arọ na eriri geomagnetic na gburugburu oghere nwere ike iduga nbibi nke arụmọrụ ngwaọrụ na ọbụna na-eduga na ọdịda ngwaọrụ, nke na-eyi egwu ntụkwasị obi na nkwụsi ike nke usoro nkwurịta okwu laser oghere.

FIG1. Ngwaọrụ nnwale makalasernyocha arụmọrụ

N'oge na-adịbeghị anya, otu ndị nyocha na China enweela ọganihu dị mkpa na nyocha arụmọrụ nke quantum dot lasers na nkwurịta okwu maka oghere. Site ọhụrụ band imewe na-arụsi ọrụ ike na mpaghara Ọdịdị njikarịcha, otu ọma mepụtara ọhụrụ nnyocha pụta nke oghere nkwurịta okwu lasers, nke nwere magburu onwe arụmọrụ na elu-ike urughuru gburugburu, quantum dot lasers. Ha mere nyocha nyocha dị omimi nke arụmọrụ nke usoro ihe dị iche iche na gburugburu oghere. Nsonaazụ nnwale ahụ na-egosi na nhazi ntụpọ quantum na-egosipụta uru nkwụsi ike n'ụzọ dị ịrịba ama na gburugburu urughuru ike dị ala nke ala orbit dị ala.

Dabere na nchọpụta a, ndị otu nyocha ahụ rụpụtara nke ọma ma mepụta ụdị ọhụrụquantum dot laser. Ngwaọrụ na-egosi arụmọrụ dị mma na gburugburu ebe dị oke egwu: na 3MeV proton injection ruo 7 × 1013 cm-2, laser na-ejigide ihe nkwalite linewidth nso na efu; Mkpọtụ ụda ike (RIN) nke ngwaọrụ ahụ dị obere ka -163 dB/Hz, ọbụlagodi na oke ntụtụ, RIN na-abawanye site na naanị 1 dB/Hz. Na mgbakwunye, laser ka nwere ike ịrụ ọrụ nke ọma n'okpuru ọnọdụ nzaghachi ọkụ siri ike nke -3.1dB. Mmezu a abụghị naanị na-akwado nsonaazụ nyocha kachasị ọhụrụ nke lasers nkwukọrịta oghere, mana na-enyekwa ntụkwasị obiìhè isi ngwọtamaka iwulite netwọk nkwukọrịta satịlaịtị dị elu.