کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7222890 | 1470555 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Precise measurement of polarization maintaining fiber length based on sawtooth wave phase modulation
ترجمه فارسی عنوان
اندازه گیری دقیق قطبش حفظ طول فیبر بر اساس مدولاسیون فاز موج دندانی
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
A new method of sawtooth wave phase modulation is proposed to improve the measurement accuracy of polarization maintaining fiber length. We convert the measurement of polarization maintaining fiber length into the measurement of time delay. The optical signal is phase-modulated by the sawtooth wave modulation signal with modulation frequency of 2fp. The demodulated error signal is related to the frequency offset of the sawtooth wave and fp. The frequency of the sawtooth wave is adjusted to make the value of the error signal be zero, so that we can obtain the value of fp and calculate the delay time. Using this method, a set of polarization maintaining fiber length measuring system is designed and the fibers of 350â¯m, 570â¯m, 600â¯m, 920â¯m and 950â¯m are measured. The measurement accuracy of optical fiber length is about 8â¯ppm, which is lower than 10â¯ppm. Compared with other methods of measuring length of the polarization maintaining fiber, the structure and principle of this system are simple, and the experimental results show that this method has high precision and is easy to realize.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 172, November 2018, Pages 249-256
Journal: Optik - Volume 172, November 2018, Pages 249-256
نویسندگان
Xiaxiao Wang, Tingting Wang, Jia Yu, Xiang Wang,