An Optical Bi-phase Modulator for Millimeter Wave Subcarrier Systems

Howard J. THOMAS; Nobuaki IMAI; Eiichi OGAWA

An Optical Bi-phase Modulator for Millimeter Wave Subcarrier Systems

Howard J. THOMAS, Nobuaki IMAI, Eiichi OGAWA

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This paper proposes a novel optical modulator for a millimeter wave (MMW) subcarrier optic link. The modulator enables the bi-phase modulation of MMW subcarriers. It simplifies the optic link by unifying such functions as IF modulation, up-convertion to MMW, and optical modulation, which are separately equipped in a conventional system. A simple model of a Mach-Zehnder external optical modulator (EOM) is used to illustrate how bi-phase modulation of millimeter wave (MMW) subcarriers can be accomplished by switching the EOM bias with a binary data signal. Experimental results are presented to confirm predictions. A wideband communications test system employing the EOM as a bi-phase modulator and utilizing spread spectrum modulation (1.3 µm optical wavelength, 40 GHz subcarrier, 100 MHz chip rate, 10MHz data rate) was developed. Bit error rate (BER) characteristics of an optical link that includes the proposed modulator are presented and compared with ideal performance and simulated predictions. Degradation of the BER characteristics from the simulation was less than 1 dB at a BER of 10^-6. A frequency doubling subcarrier bi-phase modulator is also described.

Publication: IEICE TRANSACTIONS on Electronics Vol.E79-C No.1 pp.32-39

Publication Date: 1996/01/25

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Type of Manuscript: Special Section PAPER (Special Issue on Optomicrowave Techniques and Their Applications)

Category: Optomicrowave Devices

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Howard J. THOMAS, Nobuaki IMAI, Eiichi OGAWA, "An Optical Bi-phase Modulator for Millimeter Wave Subcarrier Systems" in IEICE TRANSACTIONS on Electronics, vol. E79-C, no. 1, pp. 32-39, January 1996, doi: .
Abstract: This paper proposes a novel optical modulator for a millimeter wave (MMW) subcarrier optic link. The modulator enables the bi-phase modulation of MMW subcarriers. It simplifies the optic link by unifying such functions as IF modulation, up-convertion to MMW, and optical modulation, which are separately equipped in a conventional system. A simple model of a Mach-Zehnder external optical modulator (EOM) is used to illustrate how bi-phase modulation of millimeter wave (MMW) subcarriers can be accomplished by switching the EOM bias with a binary data signal. Experimental results are presented to confirm predictions. A wideband communications test system employing the EOM as a bi-phase modulator and utilizing spread spectrum modulation (1.3 µm optical wavelength, 40 GHz subcarrier, 100 MHz chip rate, 10MHz data rate) was developed. Bit error rate (BER) characteristics of an optical link that includes the proposed modulator are presented and compared with ideal performance and simulated predictions. Degradation of the BER characteristics from the simulation was less than 1 dB at a BER of 10^-6. A frequency doubling subcarrier bi-phase modulator is also described.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e79-c_1_32/_p

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@ARTICLE{e79-c_1_32,
author={Howard J. THOMAS, Nobuaki IMAI, Eiichi OGAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={An Optical Bi-phase Modulator for Millimeter Wave Subcarrier Systems},
year={1996},
volume={E79-C},
number={1},
pages={32-39},
abstract={This paper proposes a novel optical modulator for a millimeter wave (MMW) subcarrier optic link. The modulator enables the bi-phase modulation of MMW subcarriers. It simplifies the optic link by unifying such functions as IF modulation, up-convertion to MMW, and optical modulation, which are separately equipped in a conventional system. A simple model of a Mach-Zehnder external optical modulator (EOM) is used to illustrate how bi-phase modulation of millimeter wave (MMW) subcarriers can be accomplished by switching the EOM bias with a binary data signal. Experimental results are presented to confirm predictions. A wideband communications test system employing the EOM as a bi-phase modulator and utilizing spread spectrum modulation (1.3 µm optical wavelength, 40 GHz subcarrier, 100 MHz chip rate, 10MHz data rate) was developed. Bit error rate (BER) characteristics of an optical link that includes the proposed modulator are presented and compared with ideal performance and simulated predictions. Degradation of the BER characteristics from the simulation was less than 1 dB at a BER of 10^-6. A frequency doubling subcarrier bi-phase modulator is also described.},
keywords={},
doi={},
ISSN={},
month={January},}

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TY - JOUR
TI - An Optical Bi-phase Modulator for Millimeter Wave Subcarrier Systems
T2 - IEICE TRANSACTIONS on Electronics
SP - 32
EP - 39
AU - Howard J. THOMAS
AU - Nobuaki IMAI
AU - Eiichi OGAWA
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E79-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 1996
AB - This paper proposes a novel optical modulator for a millimeter wave (MMW) subcarrier optic link. The modulator enables the bi-phase modulation of MMW subcarriers. It simplifies the optic link by unifying such functions as IF modulation, up-convertion to MMW, and optical modulation, which are separately equipped in a conventional system. A simple model of a Mach-Zehnder external optical modulator (EOM) is used to illustrate how bi-phase modulation of millimeter wave (MMW) subcarriers can be accomplished by switching the EOM bias with a binary data signal. Experimental results are presented to confirm predictions. A wideband communications test system employing the EOM as a bi-phase modulator and utilizing spread spectrum modulation (1.3 µm optical wavelength, 40 GHz subcarrier, 100 MHz chip rate, 10MHz data rate) was developed. Bit error rate (BER) characteristics of an optical link that includes the proposed modulator are presented and compared with ideal performance and simulated predictions. Degradation of the BER characteristics from the simulation was less than 1 dB at a BER of 10^-6. A frequency doubling subcarrier bi-phase modulator is also described.
ER -