Israel PLC integration technology vendors ColorChip re-investment

Israel's high-speed optical modules and optical splitter supplier ColorChip today announced the acquisition of $ 25 million financing to improve operations, accelerate product line expansion.

Israel Development Partnership Program (Israel Growth Partners) led this round of financing, other participants include Vintage Investment Partners, and existing investors Gemini Israel Funds, BRM Group. IGP General Partner ColorChip Haim Shani will join the board. Up to now, ColorChip has completed $ 60 million financing.

ColorChip major development called SystemOnGlass based hybrid integration technology, the use of glass wafer manufacture optical devices, which will bring the field of semiconductor manufacturing technology field of optical communications. ColorChip have their own fab in Israel, and in this to make your own all kinds of devices.

ColorChip company CEO Yigal Ezra indicates, "ColorChip is experiencing rapid growth in the next two years to enhance production capacity more than 15 times. We have already opened up the leading customers in China and the United States. This round of financing will further accelerate the company's expansion to meet the market for ColorChip product rapidly growing demand. "

Be prepared to look at the development of optical communication industry

Wall Street analyst team Doyle Publishing Ltd yesterday wrote on SeekingAlpha analysis of financial performance of the leading companies in the field of optical devices Finisar's. Their conclusion is pessimistic. If they have a good analysis, whether our industry in trouble fast.

In fact, a few days ago Finisar CEO Eitan Gertel sudden resignation if he had let the outside world because of poor financial performance of Finisar resign, although officially denied this claim Finisar. Doyle analysis to verify the financial problems may encounter Finisar. These problems can be summed up that is Finisar's profitability fell again, and the reason is behind the rise over the past few years COGS costs faster than sales growth. As a direct result, Finisar's ROA is only 0.07%, ROE was 0.1%, which means that management is no return to investors. This means that even if investors put money in the bank than to vote for Finisar in exchange for higher returns.

Finisar Doyle conclusion is not supported by the current earnings outlook for the stock now. We are not the financial industry, for their analysis and conclusions can not comment. But from the feeling we live in the optical communications industry, the costs continue to rise should be an indisputable fact, more than Finisar, other optical device manufacturers face the same. Finisar has the leading technology in fact there are new technologies and products to improve profitability, most of their competitors do not have this power.

Market prospects for the optical communication industry, all these years of rapid development FTTH, data center, driving the rapid growth of optical devices and fiber optic cable and other markets. Now China Mobile to host the 90 million core km of fiber optic cable is an example of the bidding market hot. Today, however, Doyle read this article, but people have some concerns. After all, the world macroeconomic situation is also far from clear, the Americans say that the increase does not raise interest rates to observe the performance of the Chinese economy, China's own ability to maintain 7% in the second half of the growth or problems. Optical communications market in Europe has just improved, and now into a refugee crisis. Russian oil prices dragged down the market far less. Development of optical communication market growth depends on the bandwidth consumed by an unstable economic situation is difficult to say to have stable bandwidth consumption growth. Today, we still see the Wall Street Journal said that Verizon is expected to next year's estimated income levels and unchanged from 2015, is one of the reasons behind the rapidly changing needs of consumers.

If even Huawei said his far without success, so for today's optical communications industry, especially optical components industry, vigilant even more indispensable.

10Gtek will attend at ECOC2015

Important News: 10Gtek will attend ECOC2015, the leading conference on optical communication in Europe.

This time, our new released product- 100G QSFP28 DAC cables will be displayed on the show, besides the AOC, DAC Twinax Cables and optical transceivers.

Warmly welcome to visit our booth #220.

Date: 28th ~ 30th September
Adds: Feria Valencia Avenida de las ferias, s/n P.O. Bos 46035 Valencia Spain

Thank you.

ODN

ODN is an optical network based on PON equipment, mainly between OLT and ONU provide optical transmission channel. From the function points, ODN from the central office to the client can be divided into the feeder, wiring, home line subsystems and optical fiber cable terminal subsystem.

ODN network construction cost is relatively high, up to 50% to 70% of the total investment is FTTx investment focus. And also the difficulty of FTTx management. ODN use more P2MP topology, the network connecting nodes and more complex network management. Fiber sensitive than copper, more easily damaged. Therefore, ODN efficient construction, operation and maintenance of critical need an intelligent, accurate management solutions to ensure ODN network has been fully utilized, effective long-term investment protection.

As we see in the supermarket food and other commodities have the same bar code can be added in the fiber head tag of fiber for effective management, we call EODN; now this technology has become the major carriers and ITU-T, etc. standards organizations to discuss and focus.

Is it possible without changing the ODN passive features to address two core issues ODN managed to achieve ODN automated management?

iODN

Huawei proposed iODN (intelligent ODN) solutions. In iODN solution, ODN intelligence product adds the following features: Fiber identity management, port state collection, the port to find instructions, visualization tools PDA.

iODN solution enables automatic entry ODN fiber connection and management information to ensure accurate and timely information to synchronize inventory system. At the same time, through intelligent LED indication PDA visualization software and iODN device can achieve optical fiber Automation to Find, precise operation, which greatly improve the efficiency of operation and maintenance, ODN network to achieve efficient operation and maintenance. In addition, based on iODN architecture, based on the inventory system can develop a variety of value-added applications, to achieve the construction, operation and maintenance of the whole process automation.

eODN

ZTE launched the "eODN (Easy ODN)", GIS geographic information systems and R intelligent identification system based on. ODN network cycle of the system in all aspects of planning, design, construction and maintenance, the pre-planning, construction and ongoing maintenance mid-effective to combine the use of contactless smart fiber management systems to improve efficiency and achieve the various departments to share information and to optical fiber seamless transfer, let ODN network construction has become a dynamic virtuous circle, to ensure its sustainable development.

sODN

FiberHome adhere to the actual situation from the traditional starting ODN design products, we proposed "sODN (smart ODN)" complete solution.

System fully into account the existing traditional ODN operation and maintenance characteristics, and strive to ensure that existing employees can easily adapt to new intelligent ODN intelligent management mode implementation. System combines low power consumption, long life, easy to maintain, by means of the new information to make ODN network to become an organic whole, improve customer perception.

Beijing Jie Wo bring 100G Series debut CIOE 2015

The 17th China Optoelectronic Exposition (CIOE 2015) will be held next Monday the forthcoming opening in Shenzhen, then, 100G high-end optical module manufacturers professional - Beijing Jie Wo debut this year will be special equipment exhibition.

The exhibition, Beijing Jie Wo will be the exhibition site, demonstrating its 10G / 40G / 100G full range of optical modules, and optical communication applications subsystems, including:

- 100G CFP4 / CFP2 / CFP LR4 Transceivers
- 40G MSA 300Pin Transponder, 40G QSFP+ LR4&SR4
- 10G SFP+ Series Transceivers
- 100G SOA, EDFA, OEO, miniaturization WDM subsystems

Meanwhile, Beijing Jie Wo exhibition will also work with industry-leading instrument manufacturers, such as Japan Anristu etc. joint in the field of dynamic business presentation 100G BERT / portable scanner glass instrument and 100G CFP2 / CFP4 optical modules!

WTD develop high-speed polarization multiplexing coherent detection optical module technology considerations

In order to achieve accurate, effective, and reliable coherent optical communication, WTD in the coherent optical communication technology to develop high-speed polarization multiplexing coherent detection optical module products mainly consider the following several technical points.

1. Using high-standard light source technology

Coherent optical fiber communication system for signal light and local oscillator light source is relatively high, it requires a narrow spectral lines, high frequency stability. Linewidth light source itself determines the system can achieve the lowest error rate, should be minimized, while the frequency of the semiconductor laser to change the operating temperature and injection current is very sensitive to the variation amount is generally in the tens of gigahertz per degree Celsius and the tens of gigahertz per mA, therefore, for the frequency stability, in addition to the injection current and temperature stability, we must also take other frequency stabilization measures to maintain a stable optical frequency.

2. To achieve a breakthrough in terms of access technology

Coherent detection receiver technology consists of two parts, one is the light receiver technology, the other is a variety of standard intermediate frequency after demodulation techniques.

Balanced receiver method: frequency shift keying (FSK) standard, since the semiconductor laser modulation process will inevitably with additional amplitude modulation noise, using a balanced approach reduces AM reception noise. The main idea of ​​balancing law when the optical signal from the optical fiber into the local oscillator light by polarization control to ensure that the polarization state of the signal to adapt the local oscillator and signal lights through the polarizing beam splitter into two paths, and receives two identical PIN photodetector, such that the output of the two photodetectors is equal amplitude and inverted envelope signal, then the two signals after synthesis, so that doubling the FM signal, the AM noise and spurious cancel each other The DC component also counteract, to eliminate the influence of noise amplitude modulation requirements.

Polarization control technology: coherent optical communication system receiver must request signal light and the LO light polarized with biased in order to achieve good mixing effect and improve reception quality. Signal light after the single-mode fiber for long distance transmission, the polarization is random fluctuation, in order to solve this problem, a lot of ways, such as using polarization maintaining fiber, polarization controller and polarization diversity reception and other methods. When the light transmission in the general fiber, phase and polarization plane will randomly change the polarization maintaining fiber it is through the selection process and material makes the light phase and polarization unchanged specialty optical fiber, but the fiber loss, the price is very expensive; polarization The controller is mainly the signal light and the LO light with bias, this method is relatively slow response speed, loop control requirements are relatively high; polarization diversity receiver is the use of signal light and the LO light After mixing, the polarization The mixed light beam components into two mutually perpendicular polarization components, the LO light in two perpendicular polarization components by the polarization controller, so that the two components of equal power, so that when the signal light of random polarization fluctuations may cause one of the intermediate frequency signal branch decline, but another branch of the IF signal still exists, so the demodulated signal of the system and the resulting polarization of the signal light is almost independent of the technical response faster, more practical, but to achieve more complex.

3. The use of external optical modulation technology

Because when a parameter of the semiconductor laser direct modulation of the optical carrier, always incidental to other parasitic oscillation parameters, such as amplitude shift keying (ASK) modulation directly associated with the phase change, and the modulation depth will be limited. In addition, the frequency characteristics will encounter uneven and relaxation oscillation problems. Thus, in the coherent optical communication system, in addition to direct injection current can FSK frequency modulation, the other is the use of external light modulation.

4. The rational use of non-linear crosstalk control technology

Since the coherent optical communication, often using DWDM technology. Thus, the optical fiber nonlinear effects may make a coherent optical communication channel signal strength and phase affected by other channel signals to form non-linear crosstalk.

Coherent optical communication technology features and benefits

Coherent optical communication full use of coherent communication has the mixer gain, excellent channel selectivity and adjustable features. Compared with IM/DD system, coherent optical communication system has the following unique advantages:

1. High sensitivity, long distance relay

Coherent optical communications is a major advantage of enabling coherent detection, thereby improving the sensitivity of the receiver. In the coherent optical communication system, the coherent mixing light output current size of the signal light power and the local oscillator optical power proportional to the product. Under the same conditions, the coherent receiver to improve receiver sensitivity than the average of about 18dB, can achieve close to the shot noise limit performance, and therefore increase the unrepeated transmission distance of optical signals.

2. selectivity, large communication capacity

Another major advantage of coherent optical communication is that it can improve the selectivity of the receiver. In direct detection, the reception band is wider, to suppress interference noise, usually takes place before the detector narrowband filter, but the band is still very wide. Coherent heterodyne detection, the probe is a signal light and LO light of the mixed light, so only in the frequency band noise in the system before they can enter, while others are relatively narrow bandwidth microwave noise IF amplifier filtered out. Visible, heterodyne detection has good filtering properties, which will play a major role in the coherent optical communication applications. Furthermore, since the coherent detection excellent wavelength selectivity, coherent receiver can make the frequency spacing WDM system greatly reduced, that is, dense wavelength division multiplexing (DWDM), to replace the traditional light multiplexing of large frequency interval, having a wave division multiplexing potential advantages to achieve higher transfer rates.

3. You can use the equalization electronics to compensate for fiber dispersion effect of light pulses

If heterodyne detection of coherent optical communication transmission function of the IF filter transfer function coincided with the opposite optical fiber, optical fiber can reduce the influence of the dispersion of the system.

Tunable laser application in optical communication

Tunable lasers network applications can be divided into two parts: static applications and dynamic applications.

In static applications, tunable laser wavelength is set in the course does not change over time. The most common application of static laser is used as a source of alternative, i.e., for use in dense wavelength division multiplexing (DWDM) transmission system, so that a tunable laser to act as a plurality of fixed wavelength laser and a flexible back-up source of the laser can be reduced by the number of systems required to support all the different wavelengths of the line card.

Static applications, the main requirements for tunable laser is the price, output power and spectral characteristics, ie width and stability and it should replace the fixed-wavelength laser fairly. Wavelength tunable range greater the cost, the better, without the need to adjust the speed more quickly. Currently, with a precision of DWDM tunable laser system more and more applications.

Future, as a backup tunable lasers also require faster response speed. When a DWDM channel failure, a tunable laser can automatically enable it back to work. To achieve this function, the laser must be adjusted and locked at a wavelength of failure within 10 ms or less time, so as to ensure that the entire recovery time is shorter than the synchronous optical network requirements of 50 milliseconds or less.

In dynamic applications require a tunable laser wavelength can be changed regularly at work, in order to enhance the flexibility of the optical network. Such applications are generally required to provide dynamic wavelength in order to join or propose a wavelength from one network segment to meet the capacity required changes. It has been proposed a simple and more flexible ROADMs structure: this is based on use of tunable lasers and tunable filters architecture. Tunable lasers can add to the system certain wavelength, and tunable filter can filter out certain wavelengths from the system. Tunable lasers can also address cross-coupling inside the light wavelength blocking problems. To avoid this problem optical switching interface - Currently, most optical cross-coupled fiber ends using light - electricity. If you are using tunable lasers at the input to the OXC input, you can choose to protect certain wavelengths of light waves with a clear path to the end.