8 X 85.4 GBIT/S WDM FIELD TRANSMISSION OVER 421 KM SSMF LINK APPLYING AN 85.4 GBIT/S ETDM RECEIVER

  • Junginger B.
  • Lach E.
  • Schuh K.

We report on 8*85.4 Gbit/s WDM field transmission over 421 km SSMF link in the DTAG network applying an 85.4 Gbit/s ETDM receiver. Error free operation is achieved for all WDM channels after fibre transmission.

MULTI SERVICE ACCESS EVERYWHERE

  • De Vos B.
  • Fredricx F.
  • Gilon De Lumley E
  • Vetter P.

A survey is given of the MUSE network architecture. Several aspects at data plane and control plane are addressed to achieve a multi service access network. Some specific considerations for optical access are also described

151 X 43 GB/S TRANSMISSION OVER 4080 KM BASED ON RETURN-TO-ZERO-DIFFERENTIAL QUADRATURE PHASE-SHIFT KEYING

  • Bigo S.
  • Charlet G.
  • Fauconnier T.
  • Jorge F.
  • Lefrancois M.
  • Mardoyan H.
  • Tran P.

We demonstrate a record distance with N * 43 Gb/s RZ-DQPSK modulated channels. More than 1.5 dB margin is measured for all 151 WDM, 50 GHz-spaced channels at the end of the system, based on 70 nm-wide Raman repeaters

UP TO 22 DB REDUCTION OF THE RELATIVE INTENSITY NOISE OF A RAMAN FIBER

  • Bayart D.
  • Leplingard F.
  • Lorcy L.
  • Martinelli C.
  • Mongardien D.

We reduce the average RIN of a Raman fiber laser by 15 dB and demonstrate a RIN reduction of 22 dB on the highest noise peaks. Our setup basically uses Raman-pump-to-Stokes RIN transfer in optimized conditions.

IPV6 DEPLOYMENT SCENARIOS FOR LARGE ISP NETWORKS

  • Miladinovic I
  • Umschaden K

Transition from IPv4 to IPv6 from the point of view of large Internet service providers (ISP) is a complex and individual task. There is no perfect strategy, since the transition depends on existing infrastructure and it is driven by customer growth. In this paper we discuss transition strategies for large ...

FRAMEWORK FOR OPERATION AND MAINTENANCE (OAM) IN OPTICAL BURST SWITCHED NETWORKS

  • Cankaya H.
  • Chareranoon S
  • El Bawab T
  • Shin J.

The problem of operation and maintenance (OAM) in optical burst switched (OBS) networks is not addressed by the optical-networking community even though OBS has been gaining research interest in recent years. In this paper, we introduce a functional model of OBS networks and an OAM architecture that is designed to ...

DARWIN PRECURSOR DEMONSTRATION MISSION : THE ICC2 STUDY, FROM GNC DESIGN TO REAL-TIME TEST BENCH VALIDATION

  • Charbonnel C.
  • Pirson L

The implementation of a formation flying concept is being considered by ESA for the Darwin space interferometer mission, scheduled for 2015. In order to prepare this mission, some studies are led to demonstrate the feasibility of the global project. One of the critical points is the metrology chain and the ...

KEY CONTROL TECHNIQUES FOR GNC DESIGN OF MARTIAN VEHICLES

  • Le Peuvedic C
  • Maini M

The determination of the best control technique for a given application is not an easy problem, most of the time, the designer selects a technique depending on his/her own experience and with a preference for simplest ones. However, if such an approach is possible for most missions, it becomes insufficient ...

IN-FLIGHT GEOSTATIONNARY AOCS BASED ON STAR TRACKER

  • Brouillard E
  • Gaudic L
  • Pasquet J.
  • Renault H

As a conclusion, new AOCS performances are fully compliant to the system requirements and the expected behavior. Compared to the previous generation, AOCS design allows for transfer an on station operation simplification SODERN SED16/26 STR itself has shown a good behavior. Moreover, the tracking robustness has been tested in Van ...

CROMA - A NEW MEDIUM ACCESS PROTOCOL FOR MOBILE AD HOC NETWORKS

  • Coupechoux M.
  • Kumar V.

A new medium access protocol for mobile ad hoc networks, called CROMA is proposed. CROMA is collision-free and receiver-oriented. It operates in a slotted environment in a dynamic and distributed way. In this protocol, receivers act as local base-stations and can manage one or several communications on a single slot. ...

MODELING OF A SLOTTED MAC PROTOCOL FOR MANETS

  • Coupechoux M.
  • Kumar V.

Global positioning systems like GPS or GALLILEO will soon provide a very good timing accuracy, making possible the synchronization of nodes in a mobile ad hoc network (MANET). With this assumption, TDMA based MAC protocols can provide a very good utilization of the shared radio resources. This paper presents an ...

USING LINUX FOR REAL-TIME APPLICATIONS

  • Ebert C.

We've selected a topic for practitioners in the embedded and real-time domains, namely how to use Linux for real-time applications. The article is hands-on: it not only summarizes selection criteria and introduction schemes for RTLinux but also shows how Linux was actually integrated in an existing (legacy) architecture. For small ...

HYBRID SYNTHETIZERS IN SPACE : GALILEO'S CMCU

  • Alonso L.
  • Carrillo F.
  • Sanchez A A.

Galileo satellite navigation system employs as master navigation signal a 10.23 MHz tone generated from several 10MHz atomic clock references. The Clock Monitoring and Control Unit (CMCU) synthesizes dais navigation signal from one of the four embarked atomic clocks. The CMCU has to comply with very stringent requirements in order ...

FABRICATION AND CHARACTERIZATION OF LOW LOSS PHOTONIC CRYSTAL WAVEGUIDES BASED ON INP SUBSTRATE

  • Cuisin C.
  • Derouin E.
  • Drisse O.
  • Duan G.
  • Le Gouezigou L.
  • Le Gouezigou O.
  • Pommereau F.

Photonic crystal waveguides, fabricated on InP substrate using an inductively coupled plasma etching process, show propagation losses of 40dB/mm with one missing row and of less than 10 dB/mm with three missing rows.

LOW-LATENCY SECURE MOBILE COMMUNICATIONS

  • Choyi V.

On the one hand, the challenge of meeting various security requirements in the mobile and wireless environment is difficult, compared to the fixed and wired environment, because of the very nature of radio communications. On the other hand, wireless networks such as GSM, PCS and CDMA, which are predominantly circuit-switched ...

HIGH-POWER AL-FREE ACTIVE REGION RIDGE LASER DIODES FOR ATOMIC CLOCKS

  • Calligaro M.
  • Krakowski M.
  • Lecomte M.
  • Parillaud O.
  • Vermersch F.

We have developed 852 nm laser structures, using an aluminium free active region. For an AR/HR coated ridge device, we have obtained an optical power of 320 mW in a single spatial mode with the beam quality parameter M2=1.5.

NETWORK SIGNALLING COMPRESSION FOR BIT LOADING

  • Nguyen H.

Link adaptation technology has been introduced in new generation transmission systems such as 3-G or 4-G optimizing both their throughput and their power consumption. The adaptation of radio configuration requires information about the radio link quality. The information most be exchanged between the access point and the mobile terminal, leading ...

OPTIMUM MODULATION FORMAT FOR HIGH DENSITY AND / OR LONG HAUL TRANSMISSION AT 40 GBIT/S

  • Charlet G.
  • Klekamp A.

We will review some promising modulation formats that have been proposed in the past years to improve either the information spectral density and/or the achievable transmission distance of 40 Gb/s systems.

MULTISTAGE BROADBAND AMPLIFIERS BASED ON GAN HEMT TECHNOLOGY FOR 3G/4G BASE STATION APPLICATIONS WITH EXTREMELY HIGH BANDWIDTH

  • Merk S
  • Merk T
  • Seyfried U.
  • Templ W
  • Wiegner D.

GaN HFETs have been proposed for high power high linearity and high bandwidth applications and reached tremendous output power levels (T. Kikkawa et al., 2004). However, there are relatively few circuit examples especially for wideband power amplifiers fulfilling the requirements of future multiband/multistandard capable 3G/4G base stations. This work presents ...

DWDM AND SINGLE CHANNEL FIBRE NONLINEAR THRESHOLDS FOR 43 GB/S ASK AND DPSK FORMATS OVER VARIOUS FIBRE TYPES

  • Dischler R.
  • Idler W.
  • Klekamp A.

We experimentally compared nonlinear-thresholds for single channel and DWDM (0.4 bit/s/Hz) over various fibre types. NZDSFs show generally slightly reduced NLT vs. SMF and only ASK modulated DWDM systems over true wave are penalized versus single channel transmission.