Multipath Interference Test Method for Distributed Amplifiers Using Self-Heterodyne Technique

Kazuo AIDA; Takahiro OKADA; Youji HINAKO

doi:10.1093/ietele/e90-c.1.18

Multipath Interference Test Method for Distributed Amplifiers Using Self-Heterodyne Technique

Kazuo AIDA, Takahiro OKADA, Youji HINAKO

Full Text Views

0

Cite this

Summary :

A method of testing distributed amplifiers is presented; multipath interference (MPI) is detected as a beat spectrum between a multipath signal and a direct signal using a frequency-modulated test signal. A test signal with an approximately 450 MHz frequency deviation at an 80 kHz modulation frequency is emitted from a directly modulated DFB-LD by a pulse stream passing through an equalizer. A receiver consisting of a photodiode and an electrical spectrum analyzer (ESA) detects a baseband power spectrum peak appearing at the frequency of the test signal frequency deviation. MPI is converted from the spectrum peak power using a calibration chart. The test method has decreased the minimum detectable MPI as low as -70 dB, compared with that of -50 dB of conventional test methods. The detailed design and performance of the proposed method are discussed, including the calibration procedure, computer simulations for evaluating systematic errors caused by the repetition rate of the frequency modulated test signal and the fiber length under test, and experiments on single-mode fibers and distributed Raman amplifiers.

Publication: IEICE TRANSACTIONS on Electronics Vol.E90-C No.1 pp.18-24

Publication Date: 2007/01/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1093/ietele/e90-c.1.18

Type of Manuscript: Special Section PAPER (Special Section on Microoptomechatronics)

Category: Optomechatronic Instrumentation

Cite this

Copy

Kazuo AIDA, Takahiro OKADA, Youji HINAKO, "Multipath Interference Test Method for Distributed Amplifiers Using Self-Heterodyne Technique" in IEICE TRANSACTIONS on Electronics, vol. E90-C, no. 1, pp. 18-24, January 2007, doi: 10.1093/ietele/e90-c.1.18.
Abstract: A method of testing distributed amplifiers is presented; multipath interference (MPI) is detected as a beat spectrum between a multipath signal and a direct signal using a frequency-modulated test signal. A test signal with an approximately 450 MHz frequency deviation at an 80 kHz modulation frequency is emitted from a directly modulated DFB-LD by a pulse stream passing through an equalizer. A receiver consisting of a photodiode and an electrical spectrum analyzer (ESA) detects a baseband power spectrum peak appearing at the frequency of the test signal frequency deviation. MPI is converted from the spectrum peak power using a calibration chart. The test method has decreased the minimum detectable MPI as low as -70 dB, compared with that of -50 dB of conventional test methods. The detailed design and performance of the proposed method are discussed, including the calibration procedure, computer simulations for evaluating systematic errors caused by the repetition rate of the frequency modulated test signal and the fiber length under test, and experiments on single-mode fibers and distributed Raman amplifiers.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e90-c.1.18/_p

Copy

@ARTICLE{e90-c_1_18,
author={Kazuo AIDA, Takahiro OKADA, Youji HINAKO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Multipath Interference Test Method for Distributed Amplifiers Using Self-Heterodyne Technique},
year={2007},
volume={E90-C},
number={1},
pages={18-24},
abstract={A method of testing distributed amplifiers is presented; multipath interference (MPI) is detected as a beat spectrum between a multipath signal and a direct signal using a frequency-modulated test signal. A test signal with an approximately 450 MHz frequency deviation at an 80 kHz modulation frequency is emitted from a directly modulated DFB-LD by a pulse stream passing through an equalizer. A receiver consisting of a photodiode and an electrical spectrum analyzer (ESA) detects a baseband power spectrum peak appearing at the frequency of the test signal frequency deviation. MPI is converted from the spectrum peak power using a calibration chart. The test method has decreased the minimum detectable MPI as low as -70 dB, compared with that of -50 dB of conventional test methods. The detailed design and performance of the proposed method are discussed, including the calibration procedure, computer simulations for evaluating systematic errors caused by the repetition rate of the frequency modulated test signal and the fiber length under test, and experiments on single-mode fibers and distributed Raman amplifiers.},
keywords={},
doi={10.1093/ietele/e90-c.1.18},
ISSN={1745-1353},
month={January},}

Copy

TY - JOUR
TI - Multipath Interference Test Method for Distributed Amplifiers Using Self-Heterodyne Technique
T2 - IEICE TRANSACTIONS on Electronics
SP - 18
EP - 24
AU - Kazuo AIDA
AU - Takahiro OKADA
AU - Youji HINAKO
PY - 2007
DO - 10.1093/ietele/e90-c.1.18
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E90-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2007
AB - A method of testing distributed amplifiers is presented; multipath interference (MPI) is detected as a beat spectrum between a multipath signal and a direct signal using a frequency-modulated test signal. A test signal with an approximately 450 MHz frequency deviation at an 80 kHz modulation frequency is emitted from a directly modulated DFB-LD by a pulse stream passing through an equalizer. A receiver consisting of a photodiode and an electrical spectrum analyzer (ESA) detects a baseband power spectrum peak appearing at the frequency of the test signal frequency deviation. MPI is converted from the spectrum peak power using a calibration chart. The test method has decreased the minimum detectable MPI as low as -70 dB, compared with that of -50 dB of conventional test methods. The detailed design and performance of the proposed method are discussed, including the calibration procedure, computer simulations for evaluating systematic errors caused by the repetition rate of the frequency modulated test signal and the fiber length under test, and experiments on single-mode fibers and distributed Raman amplifiers.
ER -