Optical characteristics of transparent PMNT ceramic and its application at high speed electro-optic switch

Ultratransparent PMN‐PT Electro‐Optic Ceramics and Its Application in Optical Communication

“…Although PMN‐PT transparent ceramics exhibit excellent electro‐optic properties, few studies reported their application in optical communication due to the difficulty in the preparation of highly transparent ceramics. [ 1,4 ] To explore its application in optical communication, an electro‐optic modulator was designed here based on 0.5 mol% Sm‐doped PMN‐PT transparent ceramic. Figure a shows the schematic diagram of this signal transmission apparatus, including ① laser, ② polarizer, ③ transparent ceramic, ④ analyzer, and ⑤ silicon photocell, ⑥ signal generator, and ⑦ oscilloscope, LabVIEW interface or audio are used.…”

“…With the further development of optical communication, the demand has been rising rapidly for optical modulator, optical switch, optical cross connecter, variable optical attenuator (VOA), polarization controller (PC), etc. [1][2][3][4] Among various optical communication devices such as magneto-optical devices and acousto-optic devices, the electro-optic devices have the advantages of high modulation rate, wide bandwidth, and good stability. As a result, extensive efforts have been devoted to develop new electro-optic materials and transparent ferroelectrics with excellent electro-optic properties then become one research focus for the design of novel electro-optic devices.Following worldwide continuous research, various electro-optic materials have been developed up to now.…”

“…[1] (1-x)Pb(Mg 1/3 Nb 2/3 )O 3 -xPbTiO 3 (PMN-PT) transparent ceramic presents excellent electro-optic properties, for example, its maximum E-O coefficient is 66 × 10 -16 m 2 V −2 reported so far, implying that the electro-optic effect is two to five times larger than that of PLZT and 100 times larger than LiNbO 3 . [2] Moreover, PMN-PT transparent ceramic has much weaker field-induced detention, lower V π (≈200 V), and higher damage threshold (>GW cm −2 ), [4,9] making it more competitive for high power and high-speed optical communication devices with low driving voltage.…”

“…[11][12][13][14] Consequently, studies on the applications of PMN-PT based E-O devices are severely restricted for lack of highly transparent ceramics. [1,4,15] Therefore, it is significant to prepare PMN-PT transparent ceramics with high transparency and a large E-O coefficient. In previous reports, we have successfully fabricated high transparent La-doped PMN-PT ceramics with a transmittance of 70% by a two-step sintering process.…”

Simultaneous measurement of electro-optical and converse-piezoelectric coefficients of PMN-PT ceramics

“…Moreover, no consideration of the crystalline orientation is required [8], as PMN-PT is polycrystalline and polarization independent. Consequently, the PMN-PT transparent ceramics offers promise of widespread applications in the optical communication system, such as optical limiter [9], polarization controller [10] and optical switch [11,12], etc.…”