Accelerating NBN fiber testing. Tom Ronan Marketing Lead Fiber Optics Melbourne

Transcription

1 Accelerating NBN fiber testing and workforce Performance. Tom Ronan Marketing Lead Fiber Optics Melbourne

2 Agenda Network Elements and Parameters Distributed Fiber Network (DFN) Construction Network Activation Troubleshooting

3 Network Connectivity -NBNCo

4 Many Connectivity Points FAN ODF FDH MPT

5 Extract from NBN-TE-CTO-177 Changed to 0.2 soon

6 Extract from NBN-TE-CTO-177

7 Maximize workflow processes Problem Increasing number of fibers to install and test Multiple tests and reports within shorter time Ensure fiber continuity and availability Enormous demand for training Solution Optimized testing solutions with automated functions. Certify your test using pass/fail criteria Ensure consistency from test to report Value Drive efficient workflow processes Minimize training and technical support Guarantee result consistency and network performance. Improve yields and reduce re-work 7

8 DFN Model and Test Connection Points Steps: 1. Check Fiber Continuity 2. Inspect (CTO-376) 3. OTDR & (1310nm &1625nm) 4. OTDR Bi-dir 5. IL Bi-dir 6. For 576f trunk using JDSU modeling man hrs Two Man Team BiDirOTDR + BiDirIL

9 Extract from NBN-TE-CTO-177 Moving to 10Sec Ave time is feasible with quality OTDR s.

10 DFN Test Methods Steps: 1. Check Fiber Continuity 2. Inspect (CTO-376) 3. OTDR & (1310nm &1625nm) 4. OTDR Bi-dir 5. IL Bi-dir 6. For 576f trunk using JDSU modeling man hrs ~30% Saving Two Man Team BiDir OTDR(10sec)+BiDir IL

11 Optimized Workflow Testing Fibre Link to be Tested Bidir IL / ORL OTDR Standard Method Acquire Measure bidir IL & ORL Report Save all the results Automatically Acquire Measure OTDR Report Save all the results Automatically 4 minutes, 2 products/functions, 2 connections, no direct results JDSU FiberComplete Acquire Auto Measure bidir IL & ORL & OTDR Report Save all the results Automatically 2 minutes, one product, one function, direct results

12 DFN Test Method with FiberComplete Steps: 1. Check Fiber Continuity 2. Inspect (CTO-376) 3. OTDR & (1310nm &1625nm) 4. OTDR Bi-dir 5. IL Bi-dir 6. For 576f trunk using JDSU modeling man hrs ~57% Saving Two Man Team BiDir OTDR(10sec)+BiDir IL

13 New Methodology Proposals 1. Check Fiber Continuity 2. Inspect (CTO-376) 3. OTDR & (1310nm &1625nm) 4. OTDR Uni-dir 5. Derive the IL from OTDR. 6. Splice Loss No longer be checked Two Man Team Uni-dir OTDR + Derived Loss

14 Causes of Network Failure In a study by NTT-Advanced Technology, 98% of installers (blue) and 80% of network owners (red) reported that issues with connector contamination was the greatest cause of network failure.

15 NBN-TE-CTO-376 (Ref: IEC ) 35) A set of requirements for Fiber Optic connector quality Used to guarantee insertion loss and return loss performance of connectors Used as a condition for accurate testing of components or links Used as a common reference between workgroups and between you and NBNCo Used to eliminate supplier quality or batch issues.

16 Simplex vs. Multi Connectors Common types include SC- APC, LC -APC FC-APC and Optitap Common type is SCPC, LCPC Common type is HMFOC, MPO or MTP../ APC-Connector../ PC-Connector../ APC-Connector Simplex Connector APC Simplex Connector PC Multi-optical fibre connectors

17 What Makes BAD Connections? Today s connector design and production techniques have eliminated most of the challenges to achieving CORE ALIGNMENT and PHYSICAL CONTACT. What remains challenging is maintaining a PRISTINE END FACE. As a result, CONTAMINATION is the #1 source of troubleshooting in optical networks. A single particle mated into the core of a fiber can cause significant back reflection, insertion loss and even equipment damage. Light Core Cladding Back Reflection DIRT Insertion Loss

18 Contamination & Signal Performance 1 CLEAN CONNECTION Fiber Contamination and Its Effect on Signal Performance Back Reflection = db Total Loss = db 3 DIRTY CONNECTION Clean Connection vs. Dirty Connection This OTDR trace illustrates a significant decrease in signal performance when dirty connectors are mated. Back Reflection = db Total Loss = 4.87 db

19 Optical Budget Analysis (CT0-177) Link Loss Analysis Qty Total Ideal OLT connection 0.3dB ODF connection 0.3dB Splice Loss 0.12dB ~ Splitter Connections 0.3dB Splitter Loss 16.7dB Optitip Connection 0.62dB Optitap Connection 0.4dB PCD connection 0.3dB ONT Connection 0.3dB Fiber Loss (Typ 20kM@ 1310nm) 0.35dB Total Link Loss Max Allowed GPON (tpy) Budget Headroom 27.12dB 32 db 4.88 db

20 Optical Budget Analysis (CT0-177) Link Loss Analysis Qty NEW Total (w/risk) OLT connection 0.3dB ODF connection 0.3dB Splice Loss 0.12dB ~ Splitter Connections 0.3dB ( ) Splitter Loss 16.7dB Optitip Connection 0.62dB Optitap Connection 0.4dB PCD connection 0.3dB ONT Connection 0.3dB Fiber Loss (Typ 20kM@ 1310nm) 0.35dB Total Link Loss Max Allowed GPON (tpy) 32dB Budget Headroom -2.82dB

21 IEC Sets Requirements for Connector Quality SM-UPC Standard ZONE NAME SCRATCHES DEFECTS A. CORE (0 25µm) None None B. CLADDING (25 120µm) No limit <= 3µm None > 3µm No limit < 2µm 5 from 2 5 µm None > 5µm Core C. ADHESIVE ( µm) No limit No limit Cladding D. CONTACT ( µm) No limit None => 10µm Contact Pass or Fail?? FAIL 3.0um 2.4um 8.6um SUBJECTIVE INSPECTION vs. OBJECTIVE INSPECTION

22 NTD Activation (NBN-NO-GDE-007) Simultaneous testing of: 1490nm (and 1550nm) downstream power level from OLT 1310nm upstream power level from ONT

23 Benefit: Optimize Workflow

24 Maintenance & Troubleshooting 24 Fiber xdsl Central Office PON OLT WDM 1490/1550 nm Passive Splitter Drop Terminal ONT ONT Feeder fiber Distribution fibers Drop 1310 nm Terminal ONT Video AMP RF Video MDU - OTDR is used to isolate, pinpoint and quantify fiber-related troubles (cuts, bends, bad splice/ connector) - PON meter can be used to determine if ONT is bad (1310nm ONT output level) or to isolate the general problem area. - REMEMBER: 80% of network problems are caused by dirty or damaged connectors

25 Integrate Specific Maintenance Features In-service testing, out-of-band filtered 1625nm / 1650nm Test does not disturb traffic Traffic does not disturb test Shooting with an OTDR to detect the traffic is not a solution! JDSU s OTDRs are now offering traffic detection by automatically measuring the power level, no need to start OTDR acquisition

26 Summary FTTh happens in real life outside the protected traditional Telecom environment FTTh tools and testers need to adapt to the skill set of the engineers Optimized workflow is crucial to meet high installation rates and minimized OPEX Time is money Every Second Counts.