Silicon-on-Insulator (SOI) Based Nanophotonic Devices and Their Applications

Speakers: Dr. Sawsan Abdul-Majid and Prof. Winnie Ye

Date: 23 February 2012 (Thursday)

Time: Two presentations fomr 11:00 am – 12:30 pm, then the questions/discussion/refreshments/networking
form 12:30 pm till 1:00 pm.

Location: Boardroom on the 2nd Floor in Building 94 at Communications Research Centre Canada (CRC),
3701 Carling Avenue, Ottawa, Ontario K2H 8S2, Canada

Parking: Free

Registration: Free but required. To ensure a seat, please register by e-mail contacting
Qingsheng Zeng ( or Kexing Liu (

Organizers: Dr. Qingsheng Zeng and Dr. Kexing Liu

Organizer Email Addresses:

Organized by: IEEE Ottawa AP/MTT (Antennas and Propagation/Microwave Theory and Techniques)
Joint Chapter, IEEE Ottawa Photonics Society (LEOS)

Abstract: Radio-over-fiber (ROF) technology is receiving large attention
due to its ability to provide simple antenna front ends, increased
capacity and increased wireless access Coverage. Coherently detected ROF
systems would enable the information to be carried in both the amplitude
and phase or in different states of the polarization of the optical
field. Additionally, the selectivity of coherent receiver is very well
suited for access networks. Low-cost is essential to widespread
deployment in access networks and the key is photonic integration. In
coherent optical applications, the phase relationships between the ports
of components are vital to correct operation. As an illustrative example,
I shall consider a 90 degree optical hybrid used to provide in-phase (I)
and quadrature-phase (Q) channels in a digital coherent receiver. Built
on small size silicon-on-insulator (SOI) planar lightwave circuit (PLC),
the hybrid has been designed, fabricated at the Canada Photonics
Fabrication Centre (CPFC) with the support of CMC Microsystems, and
tested at our Ptlab. The optical hybrid includes passive optical
components, and shows polarization independence. Further examples of PLC
in which phase relationships are critical include external optical I-Q
modulators for coherent optical transmitters; and optical phased array
switches. The presentation will report on recent work to integrate these
passive phase elements with active components such as electro-optic
modulators and detectors. We are currently finalizing our SOI based
nanophotonic designs, which will proceed to fabrication via the OpSiS –
IME process, with the support of CMC.


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