Memorial Advanced Research Laboratory for Optical and Wireless Communications (MARLOWC)

About | People | Location | Equipment 


The Memorial Advanced Research Lab for Optical and Wireless Communications (MARLOWC) hosts research students and postdoctoral fellows working under the supervision of Professors Octavia A. Dobre, Cheng Li, Telex M. N. Ngatched, and Ramachandran Venkatesan. They tackle important problems in wireless and optical communications systems, e.g., related to full-duplex transmission, non-orthogonal multiple access, computational task offloading, resource allocation, signal intelligence, optical performance monitoring, and fibre nonlinearity compensation.

The equipment in MARLOWC supports the testing of high-performance algorithms developed by the research group, related but not limited to:

  • Spectrum monitoring and signal identification
  • Parameter estimation, signal detection and interference cancellation
  • Optical performance monitoring
  • Fibre nonlinearity compensation


  • Dr. Octavia A. Dobre
    • Wireless communications and networking
    • Optical communications
    • Underwater communications
    • Machine learning for communications and networking
    • Signal processing for communications
  • Dr. Telex M. N. Ngatched
    • 5G and 6G enabling technologies
    • Optical wireless communications
    • Hybrid optical wireless and radio frequency communications
    • Artificial intelligence and machine learning for communications
    • Underwater communications
  • Dr. Cheng Li
    • Wireless sensor networks
    • Mobile ad hoc networks
    • Vehicular networks
    • Broadband communications networks
    • Wireless communications and mobile computing
  • Dr. Ramachandran Venkatesan 
    • Parallel processing architectures and applications
    • Underwater communications
    • Error control codes
    • Digital design
    • Sensor networks


CSF 5102
Core Science Facility
Memorial University of Newfoundland
St. John's, NL


Manufacturer: Tektronix
Model: AWG7002A

  • Generation of high baud rate analog IQ signals
  • Up to 25 Gsa/s sampling rate, wideband signals up to 20 GHz
  • 16 Gsample waveform memory (640 ms @25 Gsa/s)
  • 10 bits vertical resolution

Manufacturer: Microsemi
Model: OA3MMQM

  • Amplify the analog signals generated by the AWG before driving the I/Q modulator
  • Quad channels
  • 5 Vpp output
  • 20 dB small signal gain
  • 35 GHz bandwidth

Manufacturer: Teraxion
Model: IQM-CAA-E21

  • Electro-optical conversion
  • High bandwidth (35 GHz)
  • Low optical insertion loss (12 dB)
  • Low switch-off voltage (2.5 V)
  • 20 dB extinction ratio


  • Suitable for operation over the full optical spectrum from 1260-1625 nm
  • Low attenuation: less than 0.2 dB/km in 1550 nm
  • Dispersion coefficient smaller than 18 ps/(nm• km) in 1550 nm


  • APC or AGC control modes
  • Flat spectrum over the gain range of 15-30 dB
  • Output power up to 17 dBm
  • Low noise figure
  • Low power dissipation


  • Enable a very economical and flexible way to emulate transoceanic and terrestrial systems of multi-thousand kilometres
  • Wavelength band: 1528-1600 nm

Manufacturer: Neophotonics
Model: 1000025468

  • Used as alternative ICR
  • OIF complaint
  • C-band
  • Supports up to 32 Gbaud symbol rate (100 Gb/s DP-QPSK or 200 Gb/s DP-16-QAM)

Manufacturer: Finisar
Model: CPRV1222A

  • Opto-electric conversion. Coherent detection of optical signals
  • OIF compliant
  • Supports up to 32 Gbaud symbol rate (100 Gb/s DP-QPSK or 200 Gb/s DP-16-QAM)
  • 25 GHz bandwidth on each lane
  • C-band
  • Automatic/manual gain control
  • Linear amplifier with peak detector output

Manufacturer: Pure Photonics
Model: PPCL200, PPEB200

  • Local oscillator to ICR for coherent detection
  • Narrow linewidth (10 kHz)
  • Variable output power between 7 dBm and 18 dBm
  • Tunable wavelength over C and L bands


Manufacturer: Tektronics
Model: DPO 72304DX

  • Sampling signals for offline DSP
  • Up to 100 Gsa/s sampling rate
  • 4 channels with up to 1 G points record length
  • Up to 33 GHz bandwidth

Manufacturer: Anritsu
Model: MS9740A

  • Evaluate characteristics of optical signals (spectral width, OSNR, optical power level)
  • 600 nm-1750 nm wavelength measurement range
  • Dynamic range performance ≥60 dB (0.4 nm from peak wavelength)
  • 30 pm minimum resolution bandwidth
  • ±20 pm wavelength accuracy

Manufacturer: EXFO

  • Optical power measurement
  • 800-1650 nm wavelength measurement range
  • -70-10 dBm input power range
  • ±0.01 dB resolution

Manufacturer: Tektronix
Model: PSM3310

  • Average electrical power measurement; duty cycle corrected pulse measurement; measurement logging
  • 10 MHz - 18 GHz input frequency range
  • -55 dBm - 20 dBm dynamic input power range