© Cortina Systems, Inc All Rights Reserved 0 Proprietary and Confidential NGPON2 Introduction Q2 2013

© Cortina Systems, Inc All Rights Reserved 1 Proprietary and Confidential 1 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential Agenda PON Standards NGPON standard Progress in FSAN and ITU Requirements Coexistence NGPON2 technology introduction TWDM-PON WDM-PON OFDM PON XLG PON Others Summary

© Cortina Systems, Inc All Rights Reserved 2 Proprietary and Confidential PON Standard

© Cortina Systems, Inc All Rights Reserved 3 Proprietary and Confidential 3 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential PON Standards BBF TR 200 EPON TR156 TR167 TR142 PON ONTManagem ent WT277 WT278 WT287 ITU-T/FSANCCSA E/GPON 承载 多业务 EPON 互通 10GE/GPON PON 节能 10G E/GPON 光 模块 10G-GPON G.984 1G GPON NG PON - G.987 NG PON1 - NG PON2 IEEE 802.3ah 1G- EPON 802.3av 10G- EPON SIEPON

© Cortina Systems, Inc All Rights Reserved 4 Proprietary and Confidential Other PON Standards CTC EPON Spec 3.0 GPON spec 2.0 CUC CMC/ 电网 EPON Spec GPON Spec EPON Spec ATIS OAN PON SCTE/BRC RFOG PON Cablab DOCSIS DPoE

© Cortina Systems, Inc All Rights Reserved 5 Proprietary and Confidential NGPON2 Standard Progress

© Cortina Systems, Inc All Rights Reserved 6 Proprietary and Confidential 6 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential FSAN Introduction The Full Service Access Network (FSAN) Group is an interest group for services providers and vendors to specify applicable standards. FSAN was started in 1995 FSAN has over 80 member companies representing the implementers, manufacturers, and test houses for PON Systems. FSAN’s significant works GPON IOP XGPON1 requirements and standards XGPON1 IOP NGPON2 requirements

© Cortina Systems, Inc All Rights Reserved 7 Proprietary and Confidential 7 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential Relationship between FSAN and ITU FSAN Discuss and specify requirements Technology selection ITU Discuss technical details Draft and release Standards White Paper Contribution

© Cortina Systems, Inc All Rights Reserved 8 Proprietary and Confidential 8 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential NGPON2 Motivation

© Cortina Systems, Inc All Rights Reserved 9 Proprietary and Confidential 9 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential Drive for NGPON2 Service drivers Growing bandwidth demand Video evolution, video conference, Digital Home, Social networking, Cloud Services, Gaming, P2P traffic End user requirements Backhauling Network drivers PON upgrade path Simplification of operational processes Node consolidation Power reduction Openness

© Cortina Systems, Inc All Rights Reserved 10 Proprietary and Confidential 10 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential PON Technology Migration Year 0.15G 0.6G 1G 2G 10G 40G A/BPON GEPON GPON 10GEPON XGPON1 2010???? Future Coherent/ OFDM TWDM-PON + PtP WDM Downstream Upstream Migration according to requirement,ODN coexistence, open Big split ratio ， High bandwidth ， Long reach ， Power saving 100G TDM-Based PONNG-PON2

© Cortina Systems, Inc All Rights Reserved 11 Proprietary and Confidential 11 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential NGPON2 Choices Year 2006~2010~2015 NGPON2 >=40GDS Aggregated capability per feeder ONU Substainable XGPON1 (US 2.5G;DS 10G) GPON FDM PON OFDM PON WDM PON WDM-TDM PON WDM PON(colorless)-PS-ODN WDM PON(colored)-PS-ODN WS-TDM PON WDM PON(colorless)-WS-ODN WDM PON(colored)-WS-ODN Coexistence OLT&ONU Replacement Modified ODN Coexistence Enables gradual migration from pre-existing PON systems over the same ODM OLT&ONU replacement Enables migration over a legacy ODN by a “complete” replacement of preexisting PON terminals Modified ODN Something other than only power splitter ODM

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© Cortina Systems, Inc All Rights Reserved 13 Proprietary and Confidential 13 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential TWDM-PON TWDM-PON has been confirmed to be the main technology of NGPON2. Time and wavelength division multiplexed PON 4 XGPON1 carried on 4 wavelength. 40G PON: 40G downstream; 10G upstream Coexistence Current GPON and XGPON1 can have no change Can coexist with GPON and XGPON1 Key technology Tunnable receiver Tunnable filter

© Cortina Systems, Inc All Rights Reserved 14 Proprietary and Confidential 14 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential TWDM-PON Architecture TWDM-PON reuses XG- PON technologies Downstream multiplexing Upstream access techniques Timeslot granularity Multicast capability Bandwidth allocation mechanism. OLT multiplexes and demultiplexes multiple wavelengths.

© Cortina Systems, Inc All Rights Reserved 15 Proprietary and Confidential 15 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential TWDM-PON Wavelength Plan1

© Cortina Systems, Inc All Rights Reserved 16 Proprietary and Confidential 16 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential TWDM-PON Wavelength Plan2

© Cortina Systems, Inc All Rights Reserved 17 Proprietary and Confidential 17 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential TWDM-PON Wavelength Plan3(Selected)

© Cortina Systems, Inc All Rights Reserved 18 Proprietary and Confidential 18 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential TWDM-PON Coexistence and Migaration

© Cortina Systems, Inc All Rights Reserved 19 Proprietary and Confidential 19 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential NGPON Standard G G PMD G service Architecture: Backward compatible with G-PON, XGPON1, with higher data rate New concerns / Features Security model and Proposal Time Sync ITU-T Q2/SG15 G.988 – G.OMCI G XGTC PMD specifications (based on G.987.2, with changes) Including PHY parameters and requirements Extensions to G-PON TC layer Adaptation to new PHY requirements May be subject to changes after its first version is published if necessary Extensions to G-PON, XG-PON OMCI layer Will require extensive work to make sure that nothing is broken and that references are properly handled in all documents

© Cortina Systems, Inc All Rights Reserved 20 Proprietary and Confidential 20 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential WDM-PON Each ONU is served by one or more dedicated wavelengths. A number of OLT Tx/Rx components map PON client signals onto separate wavelengths, which are multiplexed onto a shared, bidirectional fiber Two kinds of WDM PON Point to point WDM PON hybrid WDM PON : a wavelength (especially upstream) may be shared by two or more ONUs A wavelength control block (λ control) may be present to control the transmitted and received wavelengths and the respectively connected ONUs.

© Cortina Systems, Inc All Rights Reserved 21 Proprietary and Confidential 21 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential WDM-PON Architecture Advantage High bandwidth No DBA algorithm requirement Disadvantage Expensive and very high power consumption Wavelength allocation Key Technology Colorless ONU IL FP RSOA Tunnable transmitter

© Cortina Systems, Inc All Rights Reserved 22 Proprietary and Confidential 22 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential OFDM PON Orthogonal Frequency Division Multiplexed (OFDM)-PON Reliant on electronic digital signal processing (DSP) Compensate physical-layer impairments bandwidth flexibility.

© Cortina Systems, Inc All Rights Reserved 23 Proprietary and Confidential 23 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential XLG-PON Forty gigabit time division multiplexed PON (XLG-PON) Increase the downstream speed of a TDM PON from 10 Gb/s (XG-PON, ITU-T G.987) to 40 Gb/s (XLG-PON) Key Issues Optical budget APD bandwidth Chromatic dispersion (CD) Electronic complexity at higher speed:

© Cortina Systems, Inc All Rights Reserved 24 Proprietary and Confidential 24 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential Coexistence of XLG-PON

© Cortina Systems, Inc All Rights Reserved 25 Proprietary and Confidential 25 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential Other PON Technology UDWDM-PON SS WDM-PON

© Cortina Systems, Inc All Rights Reserved 26 Proprietary and Confidential Market Trend of Cortina

© Cortina Systems, Inc All Rights Reserved 27 Proprietary and Confidential 27 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential Market Trend of Cortina T4 MKT status We have win most of tier 1 vendors and will win more tier 2 vendors We will focus on 10G ONU design win the next half of this year T5 Development –- we continue to build XGPON IP –- continue to define and refine T5 as a product –- engaging key customers for T5 (H Z Juniper ALU Mitsubishi) –- we will wait until the right timing to launch product

© Cortina Systems, Inc All Rights Reserved 28 Proprietary and Confidential Summary

© Cortina Systems, Inc All Rights Reserved 29 Proprietary and Confidential 29 © Cortina Systems, Inc All Rights ReservedProprietary and Confidential Summary FSAN has decided the TDWDM-PON is chosen to be the main NGPON2 technology. P2P WDM-PON will be used in little scenario. G.989 is started to be drafted in ITU The real application of NGPON2 will be after GEPON and XGPON1 will be used as migration to the next generation PON, but they will last for long time.

© Cortina Systems, Inc All Rights Reserved 30 Proprietary and Confidential Thank You