التفاصيل البيبلوغرافية
| العنوان: |
System design and optimization of optically amplified WDM / TDM hybrid polarization-insensitive fiber-optic Michelson interferometric sensor |
| المؤلفون: |
黃世巨, Shih-Chu Huang |
| المساهمون: |
光電與通訊工程學系 |
| سنة النشر: |
2000 |
| المجموعة: |
National Kaohsiung Normal University Institutional Repository (NKNUIR) / 國立高雄師範大學機構典藏 |
| مصطلحات موضوعية: |
Design optimization, Erbium, Erbium-doped fiber amplifier, Optical crosstalk, Optical interferometry, Optical modulation, Optical pulses, Optical sensors, Sensor systems, Stimulated emission |
| الوصف: |
We investigate the optically amplified time-division-multiplexed (TDM) polarization-insensitive fiber-optic Michelson interferometric sensor (PIFOMIS) system using erbium-doped fiber amplifier (EDFA). The EDFA was named preamplifier, in-line amplifier or postamplifier; by the position it was located. We find that the preamplifier EDFA has limited usefulness because of its unstable amplification of the optical pulse trains. Both post- and in-line cases can work successfully in the TDM-PIFOMIS system. The amplitudes of the optical pulse trains are stable after amplified by the in-line EDFA, this is a significantly advantage of the optically amplified TDM-PIFOMIS system. The MPDS of the unamplified TDM-PIPOMIS system with an extinction ratio (ER) of 33 dB of the output pulse of the optical guide wave (OGW) modulator was 2.4/spl times/10/sup -5/ rad/(Hz)/sup 1/2/ at 1 kHz. For maintaining MPDS better than 3.4/spl times/10/sup -5/ rad/(Hz)/sup 1/2/ at 1 kHz, the allowable worst ER for the post- and in-line amplified system are 20 and 17.8 dB, respectively, and the corresponding input signal peak power should be larger than -20 and -25 dBm. While employing such two post- and two in-line EDFAs in the TDM-PIFOMIS system, the allowable loss of the sensor array is 47 dB. We analyze the phase-induced intensity noise (PIIN) of the optically amplified TDM-PIFOMIS system in detail and propose methods to reduce the PIIN. The output optical pulse of an intensity modulator with high ER is a key issue to minimize the PIIN and sensor crosstalk in the system. In order to reduce the system PIIN, complexity and cost, we suggest an optimum optically amplified WDM (wavelength-division multiplexing)-TDM hybrid PIFOMIS system with four wavelengths and four eight-sensor subarrays. |
| نوع الوثيقة: |
other/unknown material |
| اللغة: |
English |
| العلاقة: |
J. Lightwave Technol. / Vol.18 iss.3, pp.348-359; http://ir.nknu.edu.tw/ir//handle/987654321/12049Test; http://ir.nknu.edu.tw/ir/bitstream/987654321/12049/1/index.htmlTest |
| الإتاحة: |
http://ir.nknu.edu.tw/ir//handle/987654321/12049Test
http://ir.nknu.edu.tw/ir/bitstream/987654321/12049/1/index.htmlTest |
| رقم الانضمام: |
edsbas.957C01C3 |
| قاعدة البيانات: |
BASE |
