optical modulator


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optical modulator

[′äp·tə·kəl ′mäj·ə‚lād·ər]
(communications)
A device used for impressing information on a light beam.
References in periodicals archive ?
will be exhibiting its deformable mirrors and optical modulator products, including its new 648-5.5 deformable mirror which has 648 actuators, 5.5um stroke and high speed wavefront control and correction capabilities.
Photonics Electronics Technology Research Association (PETRA) and University of Tokyo have made a high-speed and highly efficient Si optical modulator with strained SiGe layer and demonstrated highly efficient modulations of 0.67 and 0.81 V x cm for V[pi]L at dc reverse bias voltages of -0.5 and -2 [V.sub.dc], respectively, and also demonstrated a high-speed operation of 25 Gbps for the SiMOD at a wavelength of around 1.3 [micro]m [14].
(NYSE MKT: GIG), an innovator of semiconductor ICs and software solutions for high-speed connectivity and high-quality video compression over the network and the cloud, has announced GX66471, a 64Gbaud quad-channel linear optical modulator driver in a 14mm x 9.1mm Surface Mount Technology (SMT) package for 400G/600G coherent applications, the company said.
The extension will allow UCSB to continue the research and development of a potentially ultrafast optical modulator based on graphene.
These include a receiving device (coherent receiver), a transmitting device (optical modulator) that supports the 100G digital coherent method, and the coherent optical transceiver equipped with the transmitting and receiving devices.
The test system of light and microwave hybrid switching node is connected as shown in Figure 4, which includes the Agilent E4438 vector signal generator, the DWDM optical transceiver, the optical modulator, the polarization controller, the wavelength division multiplexer and de-multiplexer, the 1 x 4 wavelength selective switch, the photodetector, the Anritsu MS9740A optical spectrum analyzer, the Agilent N9020A MXA signal analyzer and the Anritsu MP1800A BERT.
Four electrical RZ pulses with 50% duty cycle each with data rate of 10 GBPs that can produce an aggregate data rate of 40 GBPs.TMM mapping unit produces the unique symbols and these symbols are used to modulate a laser diode (LD) that is having operating wavelength of 1550 nm using the machzehnder modulator (MZM) .Bias voltages of the optical modulator are the major factor in the usefulness for the TMM receiver ability to generate an optimal eye opening for the system.
A broad-band optical modulator with active device area of 25 mm2, smallest to date, is reported at frequencies over 1 GHz, together with a broad operation spectrum that ranges from 1.35 to 1.6 mm under ambient conditions.
The LN-MZM is also used as an optical modulator for digital base-band signals or modulated RF signals, when these signals drive its dual-arms.
An improved configuration is to put the optical modulator before the mode converter, as shown in Fig.
Hittite introduced two SMT optical modulator drivers, which operate from DC to 20 GHz, and are designed to drive Lithium Niobate Mach-Zehnder (MZ) and Electro-Absorptive (EA) optical modulators with up to 8 Vp-p signals, while exhibiting low additive RMS jitter.
Tokyo, Japan, Sept 29, 2006 - (JCN) - The National Institute of Information and Communications Technology (NICT) today announced its launch of a high speed optical modulator for light network.