1270nm ke 1610nm atau 1550nm Fiber Bragg Grating FBGs adalah sejenis kisi difraksi yang dibentuk dengan memodulasi indeks bias inti serat secara berkala melalui metode tertentu. Ini adalah perangkat filter pasif. Serat kisi banyak digunakan di bidang komunikasi serat optik, pengindraan serat optik, dan pemrosesan sinyal serat optik karena ukurannya yang kecil, kehilangan fusi yang rendah, kompatibilitas penuh dengan serat optik dan bahan cerdas tertanam, dan panjang gelombang resonansinya peka terhadap perubahan. suhu, regangan, indeks bias, konsentrasi dan lingkungan eksternal lainnya.
Fiber Grating Hygrometer Humidity Sensor dikemas dengan tabung logam stainless steel, dan sensitivitas kelembapannya digunakan untuk memantau kelembapan. Sensor ini secara intrinsik aman, bebas dari interferensi elektromagnetik untuk pengujian suhu dan kelembapan.
A Phase Shifted FBG Fiber Bragg Grating introduces phase discontinuities into a fiber grating, creating a narrow transmission window in the FBG's reflection spectrum. The transmission wavelength varies with the amount of phase shift. Phase-shifted FBGs can be used as demultiplexers in dense wavelength division multiplexing (DWDM) systems. The magnitude, location, and point of the phase shift have a significant impact on the performance of the demultiplexer.
The wavelength of a pump laser diode varies at different operating temperatures. The 980nm pump FBG Fiber Bragg grating wavelength lock is used to stabilize the wavelength and intensity of the optically amplified pump laser. By precisely locking the pump laser diode through feedback of a small portion of the laser signal, this type of control significantly improves the power and wavelength output accuracy and reliability of the pump laser. Specifically, it eliminates spectral mode jumps in the pump laser, reduces power intensity fluctuations caused by temperature and pump drive current variations, and greatly improves the performance of the pump laser. It is also commonly used for stabilizing distributed feedback lasers in wavelength division multiplexing systems, the optical path of tunable lasers, and fiber resonators in Raman systems. Depending on the customer's locking requirements for the pump laser, single-grating or dual-grating configurations are available. The dual-grating configuration further improves the output spectral characteristics of uncooled pump lasers.
Hak Cipta @ 2020 Shenzhen Box Optronics Technology Co., Ltd. - Modul Serat Optik Cina, Produsen Laser Gabungan Serat, Pemasok Komponen Laser Semua Hak Dilindungi Undang-Undang.
