Latest Products Supplied - BATOP GmbH Saturable Absorber Mirror

SAM-1550-37-FC/PC-2ps
Saturable Absorber Mirror,
λ=1550nm,
Absorbance 37%,
Modulation Depth 22%Depth 22%,
Relaxation Time ~2ps,
Mounted on a 1m long Singlemode Fiber SMF 28 with FC/PC Connector

http://www.batop.de/index.html

Five Minute Fiber Expert – Hydrophones

Previously, you heard that Fibercore SM fibers are typically, skinnier, stronger and more strongly guiding than the fibers used in conventional telecommunications – but why do they need to be? Good question!

The most widespread and for Fibercore, ultimately the most important use for these fibers is acoustic sensors –sensors that detect sound waves. And whilst similar technology can be used to good effect on the land, most of the applications that we encounter involve the detection of sound waves in the water – hydrophones. Hydrophones do a wide variety of jobs. They can protect sensitive shoreline installations like oil-refineries or docks, by identifying the acoustic signatures of swimmers or speedboats. Mounted on the flanks of nuclear submarines, they can be used in conjunction with sonar to help assess depth, position and detect the presence of other vessels. They can assist the management of subsea oil reservoirs, by detecting the characteristic vibrations caused by oil flows – and arrays of hydrophones (or ‘streamers’) can even be towed behind survey ships in their quest to identify new oil reserves through the detailed seismic analysis of geological structures on or beneath the ocean floor.

Lots Of Different Applications – One Fundamental Design (courtesy of our own Dr John Wooler,who worked on hydrophones at Qinetiq before joining Fibercore).

Basically, a hydrophone sensor comprises a rod (or mandrel) encapsulated in a special, dense foam and wound with perhaps 100 m or so of singlemode optical fiber (typically one of our SM1500(X.X/80) series). When the sound waves hit the sensor, they cause the foam to expand and contract and, in doing so, the fiber is made to stretch and then relax – this modulation of the fiber changes the characteristics of the light guided within it and these changes can be analysed to determine critical characteristics of the acoustic wave.

So …

Why does our fiber need to be 80 μm (or even 50 μm) rather than 125 μm?

Because skinny fibers stretch more easily, making the sensor more sensitive and skinny fibers are under less stress when coiled and so they last longer – hydrophones in nuclear subs need to last at least 30 years.

Why does our fiber need to be much stronger than telecoms fiber – proof tested to 3% and not 1%?

Not only do these fibers have to last for 30 years or more when coiled, they are also tensioned onto the mandrel (ie pre-loaded) to ensure that they follow the compliant layer exactly as it expands and contracts.

Why does our fiber need to guide so much more strongly than a telecoms fiber?

Because, in common with many fiber sensors, designers need to get as much fiber as possible into the smallest possible volume, as a longer optical path length improves the sensitivity. Also for towed-arrays, or ‘streamers’, the individual hydrophones need to be as small as possible (typically around 10 mm diameter) in order to minimize both the turbulence they cause in the water (which could muffle-out the acoustic waves they are trying to detect) and the amount of energy it takes to drag these streamers through the water. You may have noticed that the survey ship in the picture is unusually short and wide at the stern (a bit like an iron) – that’s because it’s the kilometer or so of hydrophone streamers behind the ship that effectively complete the more usual, streamlined hull shape.

Fibercore’s product range can be found at http://www.fibercore.com/

Latest Products Supplied - OZ Optics Focuser

OZ Optics Focuser

*Model: HPUCO-23-780/1600-S-1-47-25AC

*Non Contact style SM Fiber Focuser (33mm OD housing)

*with an FC receptacle (compatible with flat, super and ultra polised FC connectors)

*f=25mm Achromatic Lens for 780/1600nm SM applications

*Unit will be optimized at 1064nm

*The predicted spot size will be about~6microns at a working distance of about~47mm when it is used with 6/125µ SM fiber at 1064nm

http://www.ozoptics.com/

Five Minute Fiber Expert: Fibercore SM Fibers

At trade shows, people from the Telecoms Industry often ask us what makes a ‘Specialty Fiber’ special? This question has given us the idea of featuring one range of Fibercore products each month in a short article designed to provide the answers – starting with SM.

Q. What makes Fibercore SM fibers special?

A. Three things – operating wavelength, resistance to bend-induced attenuation and strength

Operating Wavelength:

Standard telecommunication fibers are typically designed to operate in the second and third telecommunications windows between 1310 nm and 1550 nm. Fibercore SM-series fibers are designed for various wavelength ranges from 476 – 532 nm (SM450) to 1550 nm + (SM1500) to enable different visible and near infra-red optical sources (lasers, LEDs, SLDs etc.) to be used. These different operating wavelength ranges are achieved by changing the diameter of the core – smaller diameters optimize transmission for shorter wavelengths.

Resistance to Bend-Induced Attenuation:

Standard telecommunications fibers are typically used in a straight line – with bend diameters less than about 30 cm rarely encountered. Fibercore SM fibers, on the other hand, are often used in very small diameter coils. For example the biggest use of SM is fiber hydrophones, which can be as small as 10 mm in diameter – they need to be to reduce hydrodynamic drag when they are pulled through the water and to pack the longest optical path length into the smallest possible volume. Light just cannot travel through a telecoms fiber bent to 10 mm – but some of our SM fibers (mainly the SM1500 series) have very high numerical apertures (NAs) to provide exceptionally strong guidance and virtually lossless transmission under these conditions. Typical telecoms fibers have NAs of around 0.13 – compared with 0.3 for SM1500(4.2/80).

Strength:

The small bend-diameters that Fibercore SM-series can experience puts them under enormous stress which, over time, can cause them to break – a phenomenon called static fatigue. We prevent this in two ways – by reducing the fiber diameter and by increasing the proof-test level, relative to telecoms fibers. Standard Corning SMF28 telecoms fiber, with an outside diameter of 125 μm and proofed to 1% strain (around 100 kpsi stress) could fail immediately if coiled to 10 mm. By comparison, SM1500(4.2/80) at 80 μm diameter and proofed to 3% strain (300 kpsi stress) could last 25 years and SM1500(4.2/50) even longer.

Fibercore’s SM product range can be found at http://www.fibercore.com/

Contact Us

Decathium Sdn Bhd (500715-W)

No. 10C Jalan BK5A/2A,
Bandar Kinrara,
47100 Puchong,
Selangor Darul Ehsan
MALAYSIA

Tel: 03-8076 6766
Fax: 03-8076 1766

e-mail: info@decathium.com  

            decathiumsb@gmail.com                       
website: http://www.decathium.com/

Sponsor- International Conference On Photonics 2010

The 1^st International Conference on Photonics 2010 (ICP2010) will be held from 5^thto 7^th of July 2010 in Langkawi, Kedah, MALAYSIA. The conference is organised by IEEE Photonics Society, Malaysia Chapter with support of Ministry of Science, Technology and Innovation (MOSTI), Universiti tenaga Nasional (UNITEN), Fiber Optic Association of Malaysia (FOAM), Significant Technologies Sdn Bhd, Malaysia Convention and Exhibition Bureau and Langkawi Development Authorithy (LADA).

The goal of this conference is to create a forum for researchers, academicians, engineers and industry players from various fields of photonics with different experiences and backgrounds. This event will create opportunity to present research results, discuss current issues and exchange views that may create mutual interest. It also acts as a bridge to transfer research & development output to the applications which match the industrial requirements as well as users’ expectations.

Scope

The scope of this conference covers but not limited to:

· Biophotonics

· Blue Laser

· Dense Wavelength-Division Multiplexing (DWDM)

· Dispersion Management

· Displays

· Erbium-Doped Fiber Amplifier (EDFA)

· Electro-Optical Sensors & Systems

· Fiber-To-The-Home

· Free Space Optics

· Integrated Optics & Optoelectronics

· Lasers in Medicine & Biology

· Metamaterials

· Microwave Photonics

· Nonlinear Optics

· Optical Communications Technology

· Optical Computing

· Optical Fiber & Planar Waveguide Technology

· Optical Interconnects & Processing Systems

· Optical Networks & Systems

· Optoelectronic Materials & Processing

· Optoelectronic Packaging, Manufacturing & Reliability

· Optical Sensor

· Passive Optical Networks (PONs)

· Photodetectors & Imaging

· Photonics Security

· Radio-over-Fiber

· Reconfigurable WDM Networks

· Semiconductor Lasers

· Short Wavelength & Gas Lasers

· Solid State Lasers

· Tunable Lasers

· Ultrafast Optics & Electronics

For More Information, Click Here

Sponsor-Topical Meeting On Photonics-UPM 2010

In conjunction with the 10th Anniversary of Photonics and Fiber Optics System Laboratory (PFOS) Universiti Putra Malaysia, we are pleased to announce the Topical Meeting on Photonics 2010 (TMP2010). TMP2010 offers a platform for researchers in the field to present review papers on current advancement of the technology within their area of interest, and some recent important research findings. At the mean time, it provides an opportunity for all participants to interact and collaborate on any subject of interest.
Different from other technical conferences, most of the speakers are the Alumni of PFOS. Therefore, this meeting can also be regarded as a home-coming event. We warmly encourage all photonics research groups to participate and share their experiences. We expect this meeting to become an exciting event, participated by all experts. TMP 2010 will be held on the 14th and 15th June 2010 in the Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang, Malaysia.

Topics

Scientists, academicians and engineers in photonics relevant industry are invited to submit technical paper. TMP 2010 focuses on the following topics, but not limited to:

• High Power and Short Wavelength Laser


• Optical Fiber Communication Systems


• Multiple Wavelength Fiber Laser


• Optical/Laser Communications


• Dispersion Compensation


• Multiplexing techniques


• Optical Amplifier


• Non-linear Effect


• Radio-over-Fiber


• Waveguide


• Security


• Sensor

Keynote Speakers

Prof. Dr. Sahbudin Shaari, UKM
"Silicon on insulator PLC active devices"

Assoc. Prof. Dr. Syed Alwee Aljunid Syed Junid, UNIMAP
"OCDMA - Technology for the future"

Dr. Suhairi Saharudin, MIMOS Berhad
"A review on photonics security technology"

Adj. Prof. Dr. Mohamad Khazani Abdullah, Significant Technologies
"Photonics industry & market in Malaysia"

Dr. Mohamad Zamzuri Abd. Kadir, Telekom Malaysia R&D
"The future of FTTH in Malaysia"

Invited Speakers

Assoc. Prof. Dr. Mohammed Hayder Al-Mansoori, UNITEN
"A review on multiwavelength Brillouin-Erbium fiber lasers technology"

Dr. Ahmad Shukri, UPM
"Two-Photon Excitation Microscopy allowing Deep Optical Sectioning for Three Dimensional Imaging"

Dr. Faisal Rafiq, Universiti Malaya
"Flat Fibre technology: towards a truly flexible, distributed optical sensor"

Dr. Ir. Hairul Azhar Abdul Rashid, MMU
"Recent Developments in S-Band Optical Amplifiers"

Dr. Sevia Mahdaliza Idrus Sutan Nameh, UTM
"Optical Transceiver System Design For Radio over Fiber Supporting Future Broadband Wireless Services"

Dr. Beloui Bouzid, King Fahd University of Petroleum and Minerals Saudi Arabia
"Gain Difference Between Dual Stage Double Pass and Single Stage Single Pass EDFA"

Dr. Ghafour Amouzad Mahdiraji, School of Engineering, UCSI University
"Optical- and Electrical-Duty-Cycle Division Multiplexing Techniques for Optical Transmission Systems"

Dr. Amin Malek Mohammadi, Nottingham University
"Absolute Polar Duty Cycle Division Multiplexing"

For More Information, Click Here

Sponsor- 2nd Topical Meeting On Laser And Optoelectronics

OBJECTIVE

The 2nd Topical Meeting on Lasers and Optoelectronics will be able to be the new milestone in the field of photonics in Malaysia. This conference will not a serve as a forum for those involved in the field of photonics to explore new ideas and concepts, but will also play a crucial rule in allowing the participant to interact, network and share experiences. Furthermore, this conference will assist local researchers and scientist to form the necessary linkages with researches over the seas, and will give youngsters scientist an avenue to build networks for new research activities.

INVITED SPEAKER

1)Prof BMA Rahman

(City University, London)

2)Prof David J. Richardson

(Optoelectronics Research Centre, University of Southampton)

3)Prof Ken V. Grattan

(City University, London)

4)Dr Shaif-ul Alam

(Optoelectronics Research Centre, University of Southampton)

AREAS OF INTEREST

Microfiber Technology

Various Optical Technology in Fiber Laser

Silicon Photonics

New advances in Silicon Photonics

Optical Fiber Sensor

Four Wave Mixing

S-band Optical Amplifier

Multiple Wavelength Fiber Laser

For More Information, Please Click Here