SC485 - Advanced Fiber Access Networks

Sunday, 06 March
09:00 - 12:00

Short Course Level: Advanced Beginner


Cedric F. Lam, Google, USA
Shuang Yin, Google, USA

Short Course Description:

This course is a complementary course of SC114 and SC444 with focus on the overall broadband network systems architecture (not limited to PON) from an operator’s perspective.

It will start with the emphasis on operators’ pain points in constructing and operating broadband access networks and how fiber access networks help operators to solve their problems and evolve their businesses.  Instead of going through various PON standards and their implementation details, this course will examine the whole fiber access network network from end to end, the network scaling difficulties, bottlenecks, network economies, and the technology choices and tradeoffs operators are faced with respect to the various techno-economic  challenges.

  • Overview of fiber access architectures
  • Drivers for fiber access technology evolution
  • Advanced PON standards
    • ITU-T HS-PON, G.hsp.50Gpmd, G.hsp.TWDMpmd
    • IEEE 802.3cs Super-PON
  • WDM in fiber access networks
    • ITU-T G.989, a.k.a. NG-PON2
    • IEEE 802.3cs Super-PON
    • ITU-T G.698.4(G.metro) and ITU-T G.9802.1 (G.WDMPON)
  • Emerging technologies in optical access network
    • Digital Signal Processing (DSP)
    • Coherent Transmission
    • Photonic integration
  • End-to-end fiber access system & network scaling
    • OLT, BNG, edge cache & computing
    • Network traffic characteristics and their effects on network system designs
    • Open OLT and disaggregated PON network systems
    • SDN in access network and ONF CORD/SEBA effort
  • Converged fiber/wireless networks
    • Gigabit fiber access networks vs. gigabit fixed wireless access networks
Short Course Benefits:

  • Describe architectural and traffic characteristics of modern broadband access networks
  • Explain the techno-economic challenges faced by broadband network operators
  • Identify the scaling bottlenecks (transmission or bandwidth) in end-to-end operator broadband networks
  • Explain the challenges and enabling technologies (photonics & DSP) for implementing next generation fiber access networks
  • Apply SDN and datacenter techniques to build more scalable and cost-effective fiber access networks
  • Design fronthaul and backhaul links for 5G wireless networks
  • Compare and contrast broadband fiber vs broadband wireless access networks
Short Course Audience:

This course is an advanced level course.  Basic understanding of the FTTH technologies especially PON (Passive Optical Network) is expected in order for the audience to follow the materials.  This short course is intended for researchers and graduate students working on broadband access networks, product designers, network architects and practice engineers from internet service providers and equipment vendors.

Instructor Biography:

Cedric Lam was co-founder of Google Fiber which changed the landscape of broadband access networks in North America with the introduction of nationwide Gigabit FTTH networks.  Cedric has experience both in product development and in engineering service provider networks.  He started his career with AT&T and later joined Opvista, a startup company building high capacity optical transport equipment, as Chief System Architect.   After Opvista, he joined Google to work on datacenter networks before embarking the effort on Google Fiber, where he was Engineering Director, leading the Architecture and Device Engineering team. Cedric is now Principal Engineer in Google’s Technical Infrastructure team, working on the next generation optical interconnect technologies.  He is a member of the CORD Technical Steering Team, and Fellow of OSA.  He also edited the first textbook in PON: Passive Optical Networks, Principles and Practice, Academic Press, 2007. 

Shuang Yin is an optical network architect at Google. His research covers optical access network architectures, advanced modulation formats, and digital signal processing in high-speed local and ultra-long haul optical communication systems. He received an M.S. and Ph.D. degree in Electrical Engineering from Stanford University.