Abstract
Crosstalk is one of the significant measures of an optical cross-bar switch. In this paper, we describe a configuration for crosstalk suppression of a balanced-bridge interferometric type optical switch and its application to an optical-signal routing device. Since crosstalk of the optical switch originates from imbalance in the amplitude of a lightwave propagating within the arm of the interferometer, additional Mach-Zehnder structures were embedded for trimming the amplitude of the light. By adjusting the transmittance of the trimmers, crosstalk of less than -56 dB is achieved for dc voltage. Also, for high-frequency voltages, a crosstalk estimation procedure was developed, and crosstalk at 10-GHz sinusoidal voltage was evaluated to be -48 dB. Furthermore, based on the transient response measurement, its switching time was evaluated to be 26 ps. For a demonstration utilizing extremely low crosstalk and quick response, a guard-time-free optical signal routing experiment is also described.
| Original language | English |
|---|---|
| Article number | 6522124 |
| Journal | IEEE Journal on Selected Topics in Quantum Electronics |
| Volume | 19 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
Fingerprint
Keywords
- Optical crosstalk
- Optical modulation
- Optical switches
- Routing
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics
Cite this
Low-crosstalk balanced bridge interferometric-type optical switch for optical signal routing. / Chiba, Akito; Kawanishi, Tetsuya; Sakamoto, Takahide; Higuma, Kaoru; Takada, Kazumasa; Izutsu, Masayuki.
In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 19, No. 6, 6522124, 2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Low-crosstalk balanced bridge interferometric-type optical switch for optical signal routing
AU - Chiba, Akito
AU - Kawanishi, Tetsuya
AU - Sakamoto, Takahide
AU - Higuma, Kaoru
AU - Takada, Kazumasa
AU - Izutsu, Masayuki
PY - 2013
Y1 - 2013
N2 - Crosstalk is one of the significant measures of an optical cross-bar switch. In this paper, we describe a configuration for crosstalk suppression of a balanced-bridge interferometric type optical switch and its application to an optical-signal routing device. Since crosstalk of the optical switch originates from imbalance in the amplitude of a lightwave propagating within the arm of the interferometer, additional Mach-Zehnder structures were embedded for trimming the amplitude of the light. By adjusting the transmittance of the trimmers, crosstalk of less than -56 dB is achieved for dc voltage. Also, for high-frequency voltages, a crosstalk estimation procedure was developed, and crosstalk at 10-GHz sinusoidal voltage was evaluated to be -48 dB. Furthermore, based on the transient response measurement, its switching time was evaluated to be 26 ps. For a demonstration utilizing extremely low crosstalk and quick response, a guard-time-free optical signal routing experiment is also described.
AB - Crosstalk is one of the significant measures of an optical cross-bar switch. In this paper, we describe a configuration for crosstalk suppression of a balanced-bridge interferometric type optical switch and its application to an optical-signal routing device. Since crosstalk of the optical switch originates from imbalance in the amplitude of a lightwave propagating within the arm of the interferometer, additional Mach-Zehnder structures were embedded for trimming the amplitude of the light. By adjusting the transmittance of the trimmers, crosstalk of less than -56 dB is achieved for dc voltage. Also, for high-frequency voltages, a crosstalk estimation procedure was developed, and crosstalk at 10-GHz sinusoidal voltage was evaluated to be -48 dB. Furthermore, based on the transient response measurement, its switching time was evaluated to be 26 ps. For a demonstration utilizing extremely low crosstalk and quick response, a guard-time-free optical signal routing experiment is also described.
KW - Optical crosstalk
KW - Optical modulation
KW - Optical switches
KW - Routing
UR - http://www.scopus.com/inward/record.url?scp=84880938524&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880938524&partnerID=8YFLogxK
U2 - 10.1109/JSTQE.2013.2263121
DO - 10.1109/JSTQE.2013.2263121
M3 - Article
AN - SCOPUS:84880938524
VL - 19
JO - IEEE Journal of Selected Topics in Quantum Electronics
JF - IEEE Journal of Selected Topics in Quantum Electronics
SN - 1077-260X
IS - 6
M1 - 6522124
ER -