High performance optical wavelength shifter

Glance, B.; Wiesenfeld, J. M.; Koren, U.; Gnauck, A.H.; Presby, H.M.; Jourdan, A.

doi:10.1049/el:19921089

Cited by 129 publications

(18 citation statements)

References 2 publications

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“…Now apply Part I in this switching state. This improvement is negligible; we include it to emphasize that proves (11) for arbitrary S. Solving (11) for S gives the number of feasible tuning states in a network without (12). E wavelength changing is not limited to FM and to spare the ambitious reader from repeating the argument.…”

Section: Theorem 1 Let Fs(m P) Be the Minimum Number Of Waveotherwismentioning

confidence: 99%

“…All-to-one Because of its importance, we now discuss permutation wavelength changing devices have been demonstrated, but routing. Recall that permutation routing was defined as currently their use is limited to signals using amplitude the set of all complete matchings of transmitters and re-modulation [11,12,13]. The device in Fig.…”

Section: This Is a Contradiction F'(t S) > (1 + E)mentioning

confidence: 99%

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On the number of wavelengths and switches in all-optical networks

Barry

Humblet

1994

IEEE Trans. Commun.

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Abstract-We consider optical networks using wave-a signal launched from a transmitter may arrive at a valength division multiplexing, where the path a signal riety of receivers on many different wavelengths and/or takes is determined by the network switches, the wavearrive at a receiver on several different wavelengths. length of the signal, and the location the signal originated. Therefore, a signal is routed through a combination of circuit switching and wavelength routing (asthe number of available wavelengths, 1 it will be necessary signing it a wavelength). We present a bound on the to simultaneously assign many transmitters the same waveminimum number of wavelengths needed based on the length. Since two signals using the same wavelength canconnectivity requirements of the users and the number not travel over the same fiber simultaneously, collisions of switching states. In addition, we present a lower bound on the number of switching states in a network using a combination of circuit switching, wavelength must insure that signals do not collide at any intended rerouting, and frequency changing. The bounds hold for ceiver. That is, if receiver m is listening to wavelength A all networks with switches, wavelength routing, and at time t, we must insure that only one signal assigned to wavelength changing devices.Several examples are A at time t arrives at receiver m. If two or more arrive, we presented including a network with near optimal wavelength re-use. say there is contention. In this paper we present bounds, some of which are shown to be tight, on the number of wavelengths required under various user connectivity re-I. INTRODUCTION quirements. The lower bounds allow the possibility of re-We consider all-optical networks (AONs) using wavearranging the wavelengths assigned to active sessions to length division multiplexing, circuit switching and waveaccommodate new session requests. None of the construclength routing (A-routing for short). An advantage of A-tions require rearranging. routing is spatial re-use of wavelengths. We show thatIn section II, we formalize the network model and user there is a limit to the possible amount of wavelength reconnectivity requirements.In section III, we analyze two use.special types of passive A-routing networks. We show that In a A-routing network, the path a signal takes is a funcfor these special cases, the number of wavelengths must be tion of the the wavelength of the signal and the location on the order of the number of active sessions for a broad of the signal transmitter. If the signal paths are under class of user connectivity requirements. control of the network, e.g. through the use of switches We then relax the wavelength routing restrictions used or dynamic wavelength routing devices, we say that the in section III and consider A-routing networks with arnetwork is configurable. Otherwise we say the network is bitrary topology, wavelength changers, and switches. A passive or fixed. In a configurable network, the wavelength lower bound on the number of wave...

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Section: Theorem 1 Let Fs(m P) Be the Minimum Number Of Waveotherwismentioning

confidence: 99%

Section: This Is a Contradiction F'(t S) > (1 + E)mentioning

confidence: 99%

On the number of wavelengths and switches in all-optical networks

Barry

Humblet

1994

IEEE Trans. Commun.

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“…All-optical wavelength conversion is expected to be a key component in such systems in order to provide for network re-configurability, non-blocking capability, and routing functions. There have been many approaches to realize wavelength conversion, such as cross-gain modulation (XGM) [18], cross-phase modulation (XPM) [19], and four-wave mixing (FWM) [20], all in semiconductor optical amplifiers (SOAs). However, when data streams go through fiber links and wavelengthconversion nodes, signals are impaired by the amplified-spontaneous-emission (ASE) noise, timing jitter, FWM crosstalk, polarization mode dispersion (PMD), and other practical factors, which limit the transmission distance, and therefore the network scale.…”

Section: Wavelength-tunable All-optical Clock Recovery Using a Fiber-mentioning

confidence: 99%

Integrated Devices for Terabit per Second 1.3 and 1.5 Micron WDM/TDM Network Applications

Kumar¹,

Ho²,

Wessels³

1996

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“…Experiments of optical wavelength conversion have been reported by using the cross saturation effect in traveling wave semiconductor laser amplifiers (TWA) [1]- [4]. The signal bit rate as high as 10 GHz has been achieved in [4].…”

Section: Introductionmentioning

confidence: 99%