All-fiber otu ugboro ugboro DFB laser

Niile-fiber otu ugboroDFB laser

Nhazi ụzọ anya

Ogologo ogologo ogologo nke laser fiber DFB a na-ahụkarị bụ 1550.16nm, yana njụta ​​jụrụ n'akụkụ n'akụkụ karịrị 40dB. Nyere na 20dB linewidth nke aDFB eriri laserbụ 69.8kHz, enwere ike ịmara na eriri 3dB ya bụ 3.49kHz.

Nkọwa ụzọ anya

1. Usoro laser nke otu ugboro

Ụzọ ngwa anya bụ ihe mejupụtara ngwa anya dị ka 976 nm gbapụrụlaser, π -fase shift grating, erbium-doped fiber, na wavelength division multiplexer. Ụkpụrụ na-arụ ọrụ bụ na ọkụ mgbapụta nke 976 nm na-emepụta laser na-emepụta site na mgbapụta mgbapụta ma kewaa ụzọ abụọ. 20% nke ọkụ mgbapụta na-agafe na njedebe 980nm nke 1550/980nm wavelength division multiplexer wee banye na π -phase shift grating. A na-ejikọta laser isi mkpụrụ nke mmepụta na njedebe 1550 nm nke 1550/980nm WDM mgbe ọ gafesịrị eriri isolator. 80% nke ọkụ mgbapụta na-ejikọta site na 1550/980 nm wavelength division multiplexer n'ime 2 m erbium-doped uru eriri EDF maka mgbanwe ike, na-enweta nkwalite ike laser.

N'ikpeazụ, a na-enweta mmepụta laser site na ISO. A na-ejikọta laser mmepụta ahụ na spectrometer (OSA) na mita ike anya (PM) maka nyochaa ụdị mmepụta laser na ike laser. A na-ejikọta akụkụ niile nke ụzọ ngwa anya sistemu site na eriri fiber optic fusion splicer, na-enweta usoro sistemu eriri anya zuru oke yana ogologo oghere dị ihe dị ka mita iri. The loop nke usoro nha obosara nke ahịrị mejupụtara ngwaọrụ ndị a: abụọ 3 dB optical fiber couplers, 50 km SM-28e otu-mode optical fiber delay line, a 40 MHzacouste optic modulator, nakwa dị ka afotodetectorna onye nyocha ụdịdị dị iche iche.

2. Ngwa ngwaọrụ:

EDF: Ogologo ogologo ọrụ dị na band C, oghere ọnụọgụ bụ 0.23, ọnụ ọgụgụ kachasị elu bụ 1532 nm, uru a na-ahụkarị bụ 33 dB / m, na nkwụsị ịgbado ọkụ bụ 0.2 dB.

Ihe nchekwa mgbapụta: Ọ nwere ike inye nchebe mgbapụta na band 800 ruo 2000 nm, yana ogologo ogologo ogologo nke 976 nm na ikike njikwa ike nke 1 W.

Optical fiber coupler: Ọ na-achọpụta nkesa ma ọ bụ ngwakọta nke ike mgbaama ngwa anya. 1 * 2 Optical fiber coupler, na nkewa nkewa nke 20:80%, a na-arụ ọrụ wavelength nke 976nm, na otu-mode.

Multixer nkewa ogologo: Ọ na-achọpụta nchikota na nkewa nke akara ngosi anya abụọ dị iche iche, 980/1550 nm WDM. Ihe eriri na njedebe mgbapụta bụ Hi1060, na eriri na njedebe nkịtị na njedebe mgbaàmà bụ SMF-28e.

Isolator fiber Optical: Na-egbochi isi iyi ọkụ ka ọ ghara imetụta ya n'ụzọ dị njọ site na ọkụ na-atụgharị azụ, yana ogologo ogologo ọrụ nke 1550nm, isolator bipolar, yana ike anya kacha nke 1W.