A Lecture Meeting organized by the Calcutta Chapter of IEEE Circuits And Systems Society, in collaboration with
the Department of Electronics & Tele-Communication Engineering, Jadavpur University, Kolkata – 700 032 will be
held on 28 September, 2010 as per the schedule below:
Venue: Advanced Digital & Embedded Systems Lab, (2nd floor), Room # CC-3-17(A),
Department of ETEC, Jadavpur University, Kolkata-700 032.
Date: 28 Sep. 2010 (Tueseday) Time: (4:30 – 5:30) PM
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Abstract of the Lecture: Recently, Optical Networks have become essential to fulfill the skyrocketing demands of
bandwidth in backbone of present day’s communication systems. In these networks, flexible operation such as routing,
restoration & protection and reconfiguration are provided by these nodes where, wavelength division multiplexing
(WDM), optical matrix switches and add/drop multiplexing devices are key devices. For design and realization of
these devices, integrated optical concept has been preferred over bulky and heavy omponents requiring careful
alignment, protection against vibration, moisture, and temperature drift. Further, the conventional IC processing based
on silicon related material is used to miniaturize optical integrated circuits (OIC) in which advantages are improved
reliability, immunity to vibration and electromagnetic interference, low loss transmission, small size, light weight,
large bandwidth (multiplexing capability), low power consumption, and batch fabrication economy in comparison to
other bulk optical system.
This Lecture discusses the devices such as tunable add/drop multiplexers, wavelength division multiplexers,
optical switches and tunable EDFA gain equalizer for optical network nodes. The talk is mainly concentrated on
devices based silica waveguides with SiON core studied by the Author’s group. In this direction, different tapered
structures for multimode interference device components have been proposed for compactness of these devices. The
routing schemes and reliable protection schemes proposed first time and implemented by our group are also
mentioned in this lecture. |
