DIAMOND Power Solution

© DIAMOND SA / Titan und Krokodil / 08-06 / 1© DIAMOND Headquarters / E-2000™ & F-3000™ PS / 07-08 / 1

DIAMONDPower Solution

Fiber optic interface for high power applications


Why and how to obtain a high power fiber optic connector


Why a high power fiber optic connector?The following questions must be answered:

Which are the most common installations today? What are future market requirements? What are the most important parameters of an optical connector?

We believe the answers are as follows:

Communication networks are getting bigger, and the information traffic every day denser. The maximal power used in common fibers has now increased to 500 mW or even more.

Dense Wavelength Division Multiplexing (DWDM) technology allows sending many different signals in the same line, each of them having a certain amount of power, which added up in the main cable make it reach high power values.

An up-to-date connector must be suitable for long distance transmissions and customer access furthermore present easy and secure handling, excellent as well as repeatable optical parameters, also under rough conditions.


High quality manufacturing process

Computer assisted active core alignment

extremely reduced core eccentricity

high precision tilt angle measurement

guarantee of higher random mating repeatability

low connection lossesLow energy dispersion


Safety trough connectors’ protection cap Black chrome-plated metal

protection cap as a standard component for E-2000™ and F-3000™ connector families.

Fully respects of current security requirements

Suitable for high power applications

The black chrome plated metal cap features superior protection than any other previous solutions, presenting high optical isolation and very resistant construction.


Carbon reinforced protection caps for E-2000™& F-3000™ PS mating adapters

Fully respects of current security requirements

tested 24 Std. with 1 W power (E-2000™)

superior protection against undesirable radiation thanks to its high optical isolation

reduced temperature increase thanks to better thermal dissipation

Safety trough adapters’ protection cap


High power technology


High Power Connector

As the silica doesn't absorb the light, it doesn’t warm up and so there is no risk inside the fiber. The critical location is at the connections. At the junction, the fiber could be contaminated by dust or any kind of dirt, and the material deposited on the fiber will absorb part of the light and might warm up to a very high temperature, and hence there is a risk of damaging the fiber.

In order to have a solution suitable for high power applications with max. target power at 3 W, Diamond has developed a special E-2000™ PS & F-3000 PS connectors based on standard components.

Within the fiber core, which has a diameter of 9 µm, using a power of 1 W, the superficial power density reaches a value of roughly 10-15 GW/m2. (Solar surface power density is 62.6 MW/m2)


core diameter 9 m

transmitted power 1 W

power density 15 GW/m2

diameter of dirt particle 1 m

estimated temperature 2000 °C

Simulation:

burnt SM fiber

Standard SM fiber A perfectly cleaned connector can withstand up to 1 W without problems With a slightly contaminated connector, the dirt particles will absorb light and convert it to heat

Danger: the fiber could melt and collapse


core diameter 40 m

transmitted power 1 W

power density 1 GW/m2

diameter of dirt particle 1 m

estimated temperature 400 °C

Simulation:

Singlemode:

(spot 9 m)

High Power:

(spot 32 m)

Fiber with expanded beam

Solution: increase the mode field diameter at the connector interface

the power density is lowered to a harmless value


Execution: use of a gradient index fiber (acts as a lens) to enlarge the spot

SM fiber GRIN fiber SM fiberGRIN fibersplice splice

connector 1 connector 2

10 GW/m2

1

0.1

Computer simulation:

Fiber with expanded beam


High power production process


Fiber splicing

Splicing of MM to SM fibers is critical because of material difference Diamond ZEUS fusion splicer

with multimode and SM fiber capability

Fiber-to-fiber alignment on 125µm diameter

ZEUS fusion splicer Multimode to single mode splice


Fibers after cleavageCleaver with video camera

High precision fiber cleaver The fiber must be cleaved at the right distance (defines the focal length!)

Fiber cleaver including microscope and video camera for precise length measurement and splice quality assessment


First crimping device

Ferrule holder

Centering and Curing

The fiber must be glued within the ferrule in the right position

Special ferrule holder for the glue polymerization within standard oven

Multimode fiber is very sensitive to stress because of larger core diameter

Ferrules are pre- crimped (1° crimping) with metal wire


Collimation measurementExpanded beam connectors are very

sensitive to the focal lengthCCD camera to measure the collimation during polishing steps

Measurement of diameter


Pre-polishing (0°) High power connectors need

polishing process to optimize the length of the multimode fiber

Manual polishing steps

Pre-polishing


Active angle alignment Angular misalignment induces high insertion loss because of lens system

second crimping device: crimping is carried out to straighten the output beam direction, not to reduce core eccentricity which is less critical

before 2nd crimping: angle=0.5° IL=1.5 dB

after 2nd crimping: angle<0.1° IL<0.5 dB

Second crimping device


Final polishing (APC 4°)

Automatic final polishingAPC 4° polishingAchieve the right geometrical parametersEnsure optimal Return Loss

Polishing machine


Technical specification Sinlge Mode 4° APC Units Test conditions

Insertion Loss (IL) E-2000™ typ 0.2 max 0.6 dB IEC 61300-3-4; 1550nm Random

Insertion Loss (IL) F-3000™ typ 0.3 max 0.7 dB IEC 61300-3-4; 1550nm Random

Insertion Loss (IL) typ 0.2 max 0.4 dB IEC 61300-3-4; 1550nm Against ref.

Repeatability of IL max +/- 0.1 dB IEC 61300-2-2; 1300nm/ 1550nm

IL vs. wavelength max +/- 0.1 5 dB IEC 61300; from 1300nm to 1550nm

Return Loss (RL) MM min 75* dB IEC 61300-3-6; 1300nm/ 1550nm

Operating Temperature -40 / + 85 ** °C

Storage Temperature -40 / + 90 * °C

* Measured with high resolution reflectometer

** May be further limited by cable specifications.


Transmission efficiency Wavelength dependence: IL/ max. 0.15 dB/100 nm


The product family


E-2000™ & F-3000™ PS family Use of the same basic parts to offer reliable optical and mechanical

performances.

The PS connectors are suitable for Simplex, as well as for Backplane applications, thanks to the high-tech modular design of their components.

E-2000™ PS Simplex

F-3000™ PS Simplex F-3000™ PS Backplane

E-2000™ PS Backplane


Mating adapters with integrated spring loaded metal shutters

Additional safety for the operator Protection against sleeve

contamination

Integrated protective metal cap

Protection against eye-damaging laser radiation

Reduction of dust and scratches of ferrule front-faces

Integration of Expanded Beam Technology within Diamond’s composite ferrule

Standard connector with reduced sensibility to contamination

suitable for power up to 3 W and above

benefit

benefit

benefit

High-tech modular designed components

Enables fiber- as well as cable termination (up to Ø 3mm)

High packing density (port spacing similar to RJ45 design)

benefit

E-2000™ & F-3000™ PS Features & Benefits


E-2000™ & F-3000™ PS Simplex connectors, ensure high quality performance, maintaining channel independence and flexibility.

Features of simplex connectors


E-2000™ & F-3000™ PS Backplane connectors system, is also taking all the advantages of the E-2000™ / F-3000™ standard backplane offering up to 6 / 4 channels unit

Features of Backplane connectors

E-2000™ 6 channels

F-3000™ 4 channels


Applications

The DIAMOND PS is a very versatile connector technology, which can be used in many different applications:

Telecommunication Networks: High bit-rates and long transmission distances DWDM Systems (high optical power up to 3 Watts) Data Processing Networks

Within harsh environments (with standard optical power up to 500mW):

Thanks to the connector less sensitivity to contamination


Information label with safety precautions

Cleaning, handling and safety information within cable or pigtail package

Safety information for Power Solution connectors


Safety Video Inspection Microscope

The ideal device to ensure safety during front-face connector inspection

Detailed ferrule inspection enabling better assessment for cleaning

Documents

DIAMOND Power Solution