Electro-optic mapping systems of electric-field using CW laser diodes

Kuo, Wang-Chuang; Pai, C.H.; Huang, Shaoyong; Chou, Hsiao-Yu; Huang, H.S.

doi:10.1016/j.optlastec.2004.10.009

Cited by 4 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An enlarged view of the EO probe tip and its detailed critical dimensions are illustrated in figure 1(b). Its large EO coefficient for the tangential (transverse) electric field in fact allows it to perform well in both the dc bias and ac highfrequency voltage measurements, as evidenced in our previous measurements on high-frequency electric field distributions [9]. Since the EO probing system for ac measurement has been described well in our previous work, only properties of the dc bias measurement will be detailed in this section.…”

Section: The New Electro-optic Probing Systemmentioning

confidence: 82%

Non-contact bias voltage measurement using the electro-optic probing technique

Kuo¹,

Kuo²,

Wu³

et al. 2008

Meas. Sci. Technol.

View full text Add to dashboard Cite

The traditional non-contact electro-optic (EO) probing technique is further extended to measure quasi-dc bias voltages. We propose a special external LiTaO3 probe equipped with a grounded side-electrode (GSE) and a power supply modulation (PSM) method. The GSE can improve the voltage measurement sensitivity and error due to the tip position variation. The PSM can make all bias voltages chopped and readily picked up by using a high sensitivity lock-in amplifier. Test results on model circuits demonstrated that the proposed new EO probing system can obtain voltage measurement results that are in good agreement with known values. With this extension function this new system can perform ac high frequency and dc bias voltage measurements as well.

show abstract

Section: The New Electro-optic Probing Systemmentioning

confidence: 82%

Non-contact bias voltage measurement using the electro-optic probing technique

Kuo¹,

Kuo²,

Wu³

et al. 2008

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…For high frequency signals, they can be detected by replacing the above devices with high frequency versions or down converted to audio frequency by the EO heterodyne technique proposed by our previous work. 12 Figure 5͑a͒ shows the sensed waveform of the real-time signal on the DUT metal electrodes when the closed-loop control system was turned on. For this result, the amplifier gain was set to 200.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

A Fabry–Pérot electro-optic sensing system using a drive-current-tuned wavelength laser diode

Kuo

Lee

2010

Review of Scientific Instruments

View full text Add to dashboard Cite

A Fabry-Pérot enhanced electro-optic sensing system that utilizes a drive-current-tuned wavelength laser diode is presented. An electro-optic prober made of LiNbO(3) crystal with an asymmetric Fabry-Pérot cavity is used in this system. To lock the wavelength of the laser diode at resonant condition, a closed-loop power control scheme is proposed. Experiment results show that the system can keep the electro-optic prober at high sensitivity for a long working time when the closed-loop control function is on. If this function is off, the sensitivity may be fluctuated and only one-third of the best level in the worst case.

show abstract

“…In practical respects, the reflective scheme is generally preferred, with a sensor tip as the terminal of the optical sensor and the light being modulated at the sensor terminal when it is exposed to an electric field. The reflected beams to be detected are efficiently returned from the sensor using a number of common methods: a mirror [ 7 – 9 , 13 – 15 ]; total internal reflection [ 11 – 13 ]; highly reflective surfaces from the device under tests [ 16 ]; or through fabrication of a resonator on the sensor plate [ 10 ].…”

Section: Design Methods Of Fiber-coupled Eo Probesmentioning

confidence: 99%

Recent Advances in the Design of Electro-Optic Sensors for Minimally Destructive Microwave Field Probing

Lee

Kang

Choi

et al. 2011

Sensors

View full text Add to dashboard Cite

In this paper we review recent design methodologies for fully dielectric electro-optic sensors that have applications in non-destructive evaluation (NDE) of devices and materials that radiate, guide, or otherwise may be impacted by microwave fields. In many practical NDE situations, fiber-coupled-sensor configurations are preferred due to their advantages over free-space bulk sensors in terms of optical alignment, spatial resolution, and especially, a low degree of field invasiveness. We propose and review five distinct types of fiber-coupled electro-optic sensor probes. The design guidelines for each probe type and their performances in absolute electric-field measurements are compared and summarized.

show abstract

Electro-optic mapping systems of electric-field using CW laser diodes

Cited by 4 publications

References 8 publications

Non-contact bias voltage measurement using the electro-optic probing technique

Non-contact bias voltage measurement using the electro-optic probing technique

A Fabry–Pérot electro-optic sensing system using a drive-current-tuned wavelength laser diode

Recent Advances in the Design of Electro-Optic Sensors for Minimally Destructive Microwave Field Probing

Contact Info

Product

Resources

About