1. 英文标题 :40-47pt 副标题 :26-30pt 字体颜色 : 反白 内部使用字体 : FrutigerNext LT Medium 外部使用字体 : Arial 中文标题 :35-47pt 字体 : 黑体 副标题 :24-28pt 字体颜色 : 反白 字体 : 细黑体 HUAWEI MARINE NETWORKS CO., LTD. 2015-6-8 Green Cable Systems standardisation of a wet demonstrator

2. Page 2 What is standard? Sensors Type, sensitivity, size, mounting method? method of connection-electrical or optical? Location relative to repeater E/O comms interface Method of connection to sensor/repeater? Operating voltage/current? Operating system/protocol – ethernet? Baud rate? / Size of PCB’s? Operating environment, heat dissipation, hermeticity, humidity,etc? Sampling rate, etc? Software Language? Interface/ tools Data Transmission wavelength Overhead lambda? System functional testing

3. E/O interface/comms module Inside or outside the main repeater housing – The big question? Inside:  Consumes amplifier space impacting repeater capacity?  Adds “in-service” reliability risk to repeater? should module fail during cable integration/install – deploy or not?  Increased complexity and build time of repeater?  Benefits from proven repeater housing mechanical design  Simplifies integration  Flexibility on choice of which repeater is instrumented and when No redundant electronics overhead Outside  Divorces repeater from science Repeater only needs to support fibre /power penetration of bulkhead (proven)and tap into transmission via passive optics  Science Set containing E/O interface and comms module can be built offline and delivered tested  Adds additional complexity to integration process – impact to loading time/ship costs?  Science Set integral with Pressure sensors and Accelerometers, lead outs to Temperature sensor? Temperature sensors remote mounted to avoid thermal pick up from adjacent electronics. Page 3

4. Bulkhead mounted sensors – Non starter! Pro’s  No impact to integration time  Integrated solution removes need for further external mechanics Con’s  Space envelope restrictive Potential damage to sensors Limited available bulkhead real estate  Hermetic sealing of bulkhead compromised - would need special solution for sensors – testing and validation for 25 yrs?  Thermal pick up of temperature sensors from repeater electronics  Potential space limitation within repeater for E/O interface/comms module  Adds risk to repeater if E/O interface/comms module fails  Cannot change out module if failure during cable integration Page 4

5. Modular sensor set Page 5 Utilising proven Branching Unit double hermetic penetration technology it is possible to provide independent composite power and optics to the science module 5-10m? Pressure plus accelerometer sensors packaged with E/O/comms module. Transmission cable uninterrupted without mechanical break out. Temperature sensors mounted in buffer and/or outboard cable protection with protected cabling back to E/O comms module to avoid temperature pick up from module electronics Use of standard repeater with adaption for double penetrator bulkhead, Internal Unit contains only passive optics tap into transmission fibres at O/head wavelength. No active components therefore minimal reliability impact to repeater Independent composite optical /power feed to sensor protected with main transmission cable

6. 英文标题 :32-35pt 颜色 : R0 G63 B152 内部使用字体 : FrutigerNext LT Medium 外部使用字体 : Arial 中文标题 :30-32pt 颜色 : R0 G63 B152 字体 : 黑体 英文正文 :20-22pt 子目录 (2-5 级 ) :18pt 颜色 : 黑色 内部使用字体 : FrutigerNext LT Regular 外部使用字体 : Arial 中文正文 :18-20pt 子目录 (2-5 级 ):18pt 颜色 : 黑色 字体 : 细黑体 配色参考方案： 建议同一页面 内不超过四种 颜色，以下是 VI 基础推荐颜 色。（仅供参 考） 客户或者合作 伙伴的标志放 在右上角. Huawei Marine Confidential Sensor module to repeater connectivity Page 6 Repeater Cable termination to main transmission cable Sensor and electronics module Main transmission cable 5-10 m? Standard industry joint between repeater feed through pigtail and main transmission cable identical at each end of the repeater Main transmission cable passes through centre of sensor module without mechanical break out. Transmission path is uninterrupted & mechanical integrity is maintained Independent composite optical and low voltage electrical feed from second bulkhead penetration routed with main transmission cable direct to sensor module without break out in termination.

7. Proposal for Wet demonstrator. Page 7 Wet mate hybrid or separate power optical penetrators leading to a jumper set to connect to science observatory Dummy repeater housing to allow split out of separate composite power and optics feed to sensor set plus facilitate amplifier interface (ethernet) to transmission fibre

8. Potential case for discussion Recovered repeater cable Low cost option to build a trial demonstrator Provide a small point to point system Test and validate sensor pack and robustness of data communications Leave a legacy system Generate revenue for some remote islands Island A

9. Thank you www.huaweimarine.com