35db
1.The 3db Bandwidth is 30±5MHz. The stop-band attenuation (f_0±100MHz) is over 35db except individual frequency points.
2.The designing datum are shown as follows:width of main lobe 39′ ,level of side lobe-35riB,gain factor 35dB and the practical datum measured are width of main lobe 35′, level of sid lobe -26.5dB,gain facter 35dB.These parameters are basically coincide with similar product of the Decca company of England,but few surpass.
3.The specimens were found to emit strongly above a 35dB threshold when stable crack extension started at K 1C.
4.In this paper, Aluminium doped EDF was fabricated based on requirement of EDFA. Gain of the EDF is 35dB and gain flatness is less than 1dB at 980nm pump wavelength, 131mW pump power and -15dBm input power.
5.Output power of 3.6 dBm and signal-noise-ratio (SNR) larger than 35 dB at 1550.225 nm, and linewidth less than 500 Hz are achieved for this laser.
6.The preliminary test results are as follows:the Coff and Con are 0 21pF,6 1pF respectively; the actuated voltage is 22V.The isolation is 35dB in the off state,and insertion loss is 3dB in the on state.
7.the pull down voltage is about 25V.The package of the RF MEMS switch is done by micro stripline,and the isolation and the insertion loss are 35dB,2dB,respectively at 1 5GHz; the switching speed is about 3μs by oscilloscope.
8.The typical value of insertion loss is 0. 3 dB,and the return loss is more than 35 dB. With a excellent anti—reflection performance,it is thereby especially applicable to the large capacity,extra high speed digital transmission,wide band video analogue transmission and LAN optical fiber communication system.
9.We have designed a micro-machining based VOA that consists of an electromagnetically actuated gold-coated silicon mirror rotating around a 100 #am diameter shaft and a miniature driven coul. The VOA is capable of fast dynamic response (<2ms), great dynamic range (0~35dB), and low return loss (<55dB).
