Acceleration of gain recovery in semiconductor optical amplifiers by optical injection near transparency wavelength

Pleumeekers, J.L.; Kauer, Matthias; Dreyer, K.; Burrus, C.A.; Dentai, A.G.; Shunk, S.; Leuthold, Juerg; Joyner, C.H.

doi:10.1109/68.974145

Cited by 120 publications

(39 citation statements)

References 11 publications

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“…This is due to the gain compression effect among the data signal, probe signal, and assist light. These results show that the near transparent assist light injection enables us to reduce the recovery time without degrading the extinction ratio of the converted waveform [11].…”

Section: Numerical Model and Resultsmentioning

confidence: 71%

Signal waveform analysis for all-optical waveform converter by adjusting the power and the wavelength of assist light

Matsuura

Kishikawa²,

Kishi

et al. 2007

IEICE Electron. Express

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Abstract:We analyze signal waveform generated by a semiconductor optical amplifier (SOA)-based switch with a delayed-interferometric (DI) configuration by controlling an assist light under gain or transparent wavelength. To take advantage of the rectangular-shape waveform generated by the switch, we investigate and optimize the waveform quality by means of both Q-factor and concordance rate to rectangularshape of the converted waveform.

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Section: Numerical Model and Resultsmentioning

confidence: 71%

Signal waveform analysis for all-optical waveform converter by adjusting the power and the wavelength of assist light

Matsuura

Kishikawa²,

Kishi

et al. 2007

IEICE Electron. Express

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show abstract

“…However, the latency of the fiber-network of the complete optical ML architecture introduces some latency in the overall destination address resolution, when the content comparison output of the CAM cell has to be propagated to the RAM cell for a Read operation. By reaping the benefits of mature photonic integration multiple photonic components per chip [2], a fully integrated Matchline could enable studying all RAM and CAM functionalities simultaneously, with a shorter latency for the destination address resolution operation, which could be further improved by incorporating gain-accelerating techniques [53]. Meanwhile, for a simultaneous synchronous write operation at the RAM cell and CAM cell of the envisioned optical ML, the write operation should be performed at 5 Gb/s due to the cascaded switching operation at the AG, which is already an order of magnitude faster than the respective electronic memory speed [6,54], while faster memory updates and network changes are subject to the use of higher speed SOAs.…”

Section: Future Challenges and Discussionmentioning

confidence: 99%

Integrated Optical Content Addressable Memories (CAM) and Optical Random Access Memories (RAM) for Ultra-Fast Address Look-Up Operations

et al. 2017

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Electronic Content Addressable Memories (CAM) implement Address Look-Up (AL) table functionalities of network routers; however, they typically operate in the MHz regime, turning AL into a critical network bottleneck. In this communication, we demonstrate the first steps towards developing optical CAM alternatives to enable a re-engineering of AL memories. Firstly, we report on the photonic integration of Semiconductor Optical Amplifier-Mach Zehnder Interferometer (SOA-MZI)-based optical Flip-Flop and Random Access Memories on a monolithic InP platform, capable of storing the binary prefix-address data-bits and the outgoing port information for next hop routing, respectively. Subsequently the first optical Binary CAM cell (B-CAM) is experimentally demonstrated, comprising an InP Flip-Flop and a SOA-MZI Exclusive OR (XOR) gate for fast search operations through an XOR-based bit comparison, yielding an error-free 10 Gb/s operation. This is later extended via physical layer simulations in an optical Ternary-CAM (T-CAM) cell and a 4-bit Matchline (ML) configuration, supporting a third state of the "logical X" value towards wildcard bits of network subnet masks. The proposed functional CAM and Random Access Memories (RAM) sub-circuits may facilitate light-based Address Look-Up tables supporting search operations at 10 Gb/s and beyond, paving the way towards minimizing the disparity with the frantic optical transmission linerates, and fast re-configurability through multiple simultaneous Wavelength Division Multiplexed (WDM) memory access requests.

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“…Further analysis of our simulation model predicts a possibility of improvement in the switching time by injecting a cw assist light into the SOA (Pleumeekers et al 2002;Morito 2005). Incidence of assist light into the SOA can be simulated in the electrical circuit model by an increased dc power level of the input optical signal.…”

Section: Improvement Of Switching Timementioning

confidence: 98%

Circuit model for analysis of SOA-based photonic switch

Sengupta¹,

Barman

Basu

2009

Opt Quant Electron

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This paper presents an equivalent lumped element electric circuit model for traveling wave semiconductor optical amplifier (SOA) in integrated circuit applications. The model facilitates incorporation of chip and package parasitic elements of SOA. The model is used to represent an all optical 2 × 2 switch based on cross gain modulation in SOA capable of operating at an ultra fast speed. SPICE simulation of the switch with the proposed circuit model provides bit error rate (BER) values at the switch output which agrees well with the experimentally measured values at 10 Gb/s. The degradation of switching performance has been examined in terms of bit error rate, modulation bandwidth and switching time in the presence of chip parasitic elements of SOA.

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Acceleration of gain recovery in semiconductor optical amplifiers by optical injection near transparency wavelength

Cited by 120 publications

References 11 publications

Signal waveform analysis for all-optical waveform converter by adjusting the power and the wavelength of assist light

Signal waveform analysis for all-optical waveform converter by adjusting the power and the wavelength of assist light

Integrated Optical Content Addressable Memories (CAM) and Optical Random Access Memories (RAM) for Ultra-Fast Address Look-Up Operations

Circuit model for analysis of SOA-based photonic switch

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