Furukawa Electric Announces Sampling of Micro ITLA for 100 Gbps Optical Coherent Transmission

   Furukawa Electric Announces Sampling of Micro ITLA for 100 Gbps Optical
                            Coherent Transmission

PR Newswire

ANAHEIM, Calif., March 18, 2013

ANAHEIM, Calif., March 18, 2013 /PRNewswire/ -- OFC/NFOEC 2013, Booth #2627
--Furukawa Electric Company, Ltd. has developed a micro Integrable Tunable
Laser Assembly (ITLA), a key component in ultrahigh-speed optical digital
coherent transmission devices operating at 100 gigabits per second (Gbps).
This transmission device is now being introduced globally with initial
sampling of the micro ITLA. In addition to meeting the industries' demand
for much lower power consumption and high optical output, Furukawa has also
developed a new wave length tunable laser chip that enables an additional 20%
reduction in power consumption. When used in combination with the micro ITLA,
it further reduces power consumption by 40% against conventional products and
nearly doubles the optical output when compared with micro ITLA. These
benefits along with the acceptance of the Optical Internetworking Forum (OIF)
to standardize the ITLA specification make the micro ITLAs an attractive
choice for optical communication devices. The new wave length tunable laser
chips are planned to be mounted on the micro ITLA devices beginning in early
2014.

Presently, global network traffic continues to grow at a phenomenal rate in
both terrestrial and wireless networks. With smartphones now a ubiquitous tool
for consumers and business users, acceptance of cloud computing, data center
connectivity and mass video distribution, the telecommunications industry is
presently accelerating the deployment of 100Gbps transmission systems for high
capacity. The industry has converged on optical digital coherent technology in
transmission systems, which involves the use of optical phases (wave
conditions) resistant to signal deterioration and impervious to the effects of
noise.

Furukawa has already commercialized high-output and narrow-line-width ITLAs
that exhibit excellent properties for signal lights from the optical digital
coherent system (Note 1) and for local oscillator (Note 2). Since the industry
continues to demand higher capacity, the specifications for small and low
power-consumption ITLAs have now been accepted and standardized by the OIF
(Note 3).

The micro ITLA is a light source that has been made smaller, consuming less
electricity while retaining the same specifications of conventional ITLAs that
the industry is used to. These specifications include communications protocol
and optical-electric properties.

Conventional and micro ITLA comparison

Using its innovative history and manufacturing prowess, Furukawa has developed
technologies for assembling and fixing high-accuracy optical components for
manufacturing micro ITLAs (half the size or less compared to conventional
ITLAs, 45 x 20 mm). A small package module has been developed by harnessing
these technologies. Furukawa's expertise in laser driver circuits and digital
circuits has also been exercised to reduce the form factor.

The new wave length tunable laser chips from Furukawa can reduce power
consumption by 20% from 5W to 4W. Currently available conventional lasers use
GaInAsP crystals as active layers of the lasers. However, the optical output
is reduced significantly at higher temperatures requiring cooling operation
below room temperature. Furukawa's new wave length tunable laser chips use
AlGaInAs crystals (Note 4) for the light-emitting layer. By using this
material, Furukawa has achieved better control of the optical output at higher
temperatures improving it to 16dBm or higher compared with 13.5dBm of
conventional GaInAsP products. In addition, new wavelength tunable laser
chips also increases the operating temperature by 15 degrees Celsius higher
than conventional products, thus reducing the power consumption on the TEC
(Note 5) and even lower when used on the micro ITLA (up to 40% compared to
conventional products).

The new micro ITLA product will be exhibited at OFC/NFOEC 2013, scheduled to
be held from March 19 in Anaheim, California, United States. A paper on the
new wave length tunable laser chips will also be presented at the IEICE
General Conference 2013, which will be held in Gifu, Japan from March 19.

Technical Specifications

Item                  Specifications of micro Specifications of conventional
                      ITLAs                   ITLAs
Wave length variable  1528 - 1564nm (C band)  1528 - 1564nm (C band)
width
                      1570 - 1607nm (L band)  1570 - 1607nm (L band)
                      13.5dBm(1^st release)
Optical output                                13.5dBm or greater
                      16dBm (with new chip)
Line width            <500kHz                 <500kHz
Side mode suppression >40dB                   >40dB
ratio
Average relative      <-140dB/Hz              <-140dB/Hz
intensity noise
Wave length stability <+/-2.5GHz              <+/-2.5GHz
Power consumption     5W                      6.5W
Size                  45×20×7.5mm             74×30.5×10.5mm

Glossary

(Note 1) Optical digital coherent system: Involving the use of digital signal
processing to detect optical phase information from transmitted data, the
system is capable of transmitting a large volume of information within a
narrow bandwidth.

(Note 2) Local oscillator: In the optical digital coherent system of
transmission, this kind of light is locally used to facilitate interference
with signal lights to obtain phase information from the transmitted data. This
requires a narrow line width.

(Note 3) OIF: Optical Internetworking Forum is an industry group that endorses
the standardization of optical network devices and their optical components.

(Note 4) AlGaInAs:This material makes it possible to create lasers that
control the lowering of output even at high temperatures, compared to the
conventional GaInAsP. As it contains Al which is oxidized readily, it is
generally considered difficult to apply AlGaInAs to integrated-type optical
elements that are produced through complicated processes.

(Note 5) TEC: Thermoelectric Cooling Module: This module carries out heat
generation and heat absorption by passing a current to the portion connecting
two thermal electronic materials. It is used for adjusting the temperature of
the laser chips in this product.

About Furukawa Electric Company, Ltd.

Furukawa Electric Co. Ltd. (www.furukawa.co.jp/english) is an $11 billion
global leader in the design, manufacture and supply of fiber optic products,
network products, electronics components, power cables, nonferrous metals, and
other advanced technology products. Headquartered in Tokyo, Japan, Furukawa
operates production facilities on five continents around the globe, including
OFS in the U.S.A., Europe and China.

About OFS

OFS is a world-leading designer, manufacturer and provider of optical fiber,
optical fiber cable, FTTX, optical connectivity and specialty photonics
products. Our marketing, manufacturing and research divisions listen to
customers and work together to provide innovative products and solutions that
traverse many different applications as they link people and machines
worldwide. Between continents, between cities, around neighborhoods, and into
homes and businesses of digital consumers we provide the right optical fiber,
optical cable and components for efficient, cost-effective transmission.

OFS' corporate lineage dates back to 1876 and includes technology powerhouses
such as AT&T and Lucent Technologies (now Alcatel-Lucent). Today, OFS is
owned by Furukawa Electric, a multi-billion dollar global leader in optical
communications. Headquartered in Norcross (near Atlanta) Georgia, U.S., OFS
is a global provider with facilities in Avon, Connecticut; Carrollton,
Georgia; Somerset, New Jersey; and Sturbridge, Massachusetts, as well as in
China, Denmark, Germany and Russia.

For more information, please visit www.specialtyphotonics.com.

SOURCE Furukawa Electric Company, Ltd.

Website: http://www.furukawa.co.jp/english
Contact: PR Contact: Sherry Salyer, OFS Public Relations, +1-770-798-4210,
shsalyer@ofsoptics.com; or Technical Contact: Takahiro Okada, Furukawa
Electric, t-okada@ch.furukawa.co.jp
 
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