ATV CARGO INTEGRATION SAFETY CERTIFICATION PROCESS

  • Garbellini L

A large number of manned modules are being progressively launched to the International Space Station (ISS) and integrated on-orbit, required to be operated and maintained over long on-orbit stay time, supported by periodical servicing and supply. The European Space Agency (ESA), together with its several industrial aerospace contractors such as ...

ACCURATE TUNING OF EMISSION OF GAINASP / INP HETEROSTRUCTURES IN MULTIWAFER GAS-SOURCE MOLECULAR-BEAM EPITAXY

  • Gaborit F.
  • Gentner J.
  • Lelarge F.

Photoluminescence wavelength emission of GaxIn1-xAsyP1-y/InP heterostructures grown in multiwafer gas-source molecular-beam epitaxy (GSMBE) is studied in detail for both bulk and multiple quantum well (MQWs) heterostructures. Excellent photoluminescence wavelength uniformity is reported in 4*2-in. configuration, demonstrating the compatibility of GSMBE process with large-scale 1.55 mu m telecom laser production. A ...

RELATIVE IMPACT OF THE DIFFERENT INTRACHANNEL NONLINEAR EFFECTS OVER 43 GB/S TRANSMISSIONS WITH VARYING FIBRE DISPERSION

  • Antona J.
  • Barnasson E.
  • Bigo S.
  • Charlet G.
  • Lefrancois M.

A numerical method is proposed to accurately discriminate the influence of each intrachannel nonlinear effect. In contrast to other studies, we obtain that i-FWM is the most penalizing effect in all our investigated 43 Gb/s cases.

OPTICAL COMMUNICATIONS IN 2025

  • Desurvire E.

In 20 years, optical networks will have to carry vastly increased amounts of IP traffic. Today's knowledge points to ultimate technology limits, which are discordant with market prospects. Basic research must urgently be revived today in order to meet tomorrow's needs

SYSTEM IMPACT OF FIBRE REPAIRS ON A N X 40 GBIT/S ALL-RAMAN AMPLIFIED SUBAMRINE TRANSMISSION

  • Bigo S.
  • Charlet G.
  • Tran P.

The consequences of fibre repairs on the system performance of N*40 Gbit/s submarine links are emulated in a recirculating loop. After adjustment of the cumulated dispersion, no more than 1.5 dB Q-factor penalty is found.

INVESTIGATION OF ADVANCED DISPERSION MANAGEMENT TECHNIQUES FOR ULTRA-LONG HAUK TRANSMISSIONS

  • Antona J.
  • Bigo S.
  • Le Meur G.
  • Lefrancois M.

We investigate the potential of double-period dispersion management techniques to improve ultra-long haul WDM systems and match optical networks constraints. We particularly outline the crucial impact of the cumulated dispersion between consecutive nodes.

ACTIVE AND PASSIVE MODE-LOCKING IN BURIED RIDGE MODE-LOCKED QUANTUM DOTS FABRY-PEROT SEMICONDUCTOR LASERS

  • Accard A.
  • Brenot R.
  • Dagens B.
  • Duan G.
  • Le Gouezigou O.
  • Lelarge F.
  • Poingt F.
  • Pommereau F.
  • Renaudier J.
  • Rousseau B.

Both passive and active mode-locking have been demonstrated in single-section quantum dots Fabry-Perot semiconductor lasers without saturable absorber, generating pulses at 28 GHz repetition frequency with one picosecond pulse width.

OPTICAL GENERATION OF 43 GBIT/S PHASE-SHAPED BINARY TRANSMISSION FORMAT FROM DPSK SIGNAL USING 50 GHZ PERIODIC OPTICAL FILTER

  • Brindel P.
  • Leclerc O.
  • Pierre L.

A novel method to optically generate PSBT format at 43 Gbit/s is proposed hereafter. Performance have been compared with NRZ format showing reduced OSNR penalty by 0.7 and 1.3 dB for 4.10-3 (FEC limit) and 10-5 BER, respectively.

ALUMINO-SILICA HEAVY DOPED FIBERS FOR COMPACT WDM-EDFAS

  • Bayart D.
  • Gasca L.
  • Moreau C.
  • Simmonneau C

WDM amplification tests performed on highly erbium-doped fibers show that 36-dB/m fibers offer the best tradeoff to design efficient compact WDM amplifiers.

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 ...