Ultralow power optical interconnect with zero-biased, ultralow threshold laser-how low a threshold is low enough?

Cutrer, D.M.; Lau, K.Y.

doi:10.1109/68.363394

Cited by 54 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its switching delay is mainly determined by the "turn-on" latency [19], which is the delay in the emission of light from the laser after applying the driving current [20]. This delay is typically the time for the driving current to fill the electron up to the laser emission threshold level, which varies from 10 to 100 ps, depending on the type of driving circuitry [19]. The dissipated power is mainly determined by the average current, which is negligible during this short period.…”

Section: The Enabling Technologymentioning

confidence: 99%

ESPN: A case for energy-star photonic on-chip network

2013

International Symposium on Low Power Electronics and Design (ISLPED)

View full text Add to dashboard Cite

Photonic Network-on-Chips (NoCs) have recently been proposed due to their inherent low latency and high bandwidth. However, the high static power of the photonic components (e.g. laser source, resonators and waveguides) often results in energyinefficient architectures. In this paper, we advocate the EnergyStar Photonic Network (ESPN) architecture that optimizes energy utilization via a two-pronged approach: (1) by enabling dynamic resource provisioning, ESPN adapts photonic network resources based on runtime traffic characteristics and (2) by utilizing all-optical adaptive routing, ESPN improves energy efficiency by intelligently exploiting existing network resources without introducing high latency and power hungry auxiliary routing mechanisms. Our evaluation results show that compared to the baseline design, ESPN reduces power and energy consumption under synthetic traffic patterns by 50% and 58% respectively.

show abstract

Section: The Enabling Technologymentioning

confidence: 99%

ESPN: A case for energy-star photonic on-chip network

2013

International Symposium on Low Power Electronics and Design (ISLPED)

View full text Add to dashboard Cite

show abstract

“…Several papers have investigated the belowthreshold dynamic behavior of VCSEL [3][4] . Figure 1 shows the time evolution of the electron density (N(t)) and optical output (p opt (t)) under a pseudorandom pulse modulation (I(t)).…”

Section: Introductionmentioning

confidence: 99%

Low-power current-equalised optical transmitter for below-threshold-biasing VCSEL operation

Lee

Chow³

et al. 2015

2015 European Conference on Optical Communication (ECOC)

View full text Add to dashboard Cite

Time I(t) N(t) p opt (t) P ele (t) N th t on (a) (b) t on (c1) t on (c2) I th I th I th I th t on (c3) I th N th N th N th N th I th N th Conventional Approach Zero-Biasing Problem Increasing Modulation Intensity Near-Threshold-Biasing Our Approach: High Start-up ModulationFig. 1: (a) Conventional above-threshold current (Ith) VCSEL operation and (b) turn-on delay (ton) is observed at below-threshold current operation and (c) the possible solutions.Abstract A novel optical driver circuitry is proposed to improve the optical eye diagram for the VCSEL operating below the threshold current. The circuitry enables the operator to balance between the energy efficiency and optical signal quality.

show abstract

“…This approach is attractive for optical network and interconnection systems because simple drive circuits can be utilized. In addition, zero-bias modulation format of directly modulated SLD is highly favourable in optoelectronic integrated circuits (OEIC's) [2] since it eliminates the need for optical monitoring and feedback control of the bias point for each individual laser. Also, the improvements in laser manufacture allow today operating uncooled direct modulated lasers over abroad temperature range.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome this increase, the bias current should be increased but the one would pay the price of extinction ratio. An alternative approach to threshold biasing is zero-biased the laser [2], i. e. the laser is driven by a specified current for a "1" bit and is off otherwise, thus eliminating a dc bias circuit. This approach is attractive for optical network and interconnection systems because simple drive circuits can be utilized.…”

Section: Introductionmentioning

confidence: 99%

Turn-on Time Delay of Uncooled Semiconductor Laser Diode Subject to External Optical Feedback: Theoretical Analysis

Ab-Rahman

Hassan

2009

2009 Fifth International Conference on MEMS NANO, and Smart Systems

View full text Add to dashboard Cite

In this paper, the effect of external optical feedback (EOF) on the turn-on time delay (t on) of uncooled semiconductor laser diode (SLD) is investigated theoretically. The effects temperature of operation (T) and EOF on t on are calculated according to their effect on threshold carrier density (N th) . The temperature dependence (TD) of N th is calculated according to the TD of laser cavity parameters and not by the well-known Parkove relationship. Simulation results show that t on increases as T increases due to increasing of N th. In addition, t on decreases as external reflectivity (r ext ) increases when the phase of reflected light is coherent. While at incoherent reflected light, t on increases sharply around specified value of r ext where this leads to inoperable case for SLD.Keywords-external optical feedback, temperature effect, turn-on time delay, semiconductor laser diodes.

show abstract

Ultralow power optical interconnect with zero-biased, ultralow threshold laser-how low a threshold is low enough?

Cited by 54 publications

References 7 publications

ESPN: A case for energy-star photonic on-chip network

ESPN: A case for energy-star photonic on-chip network

Low-power current-equalised optical transmitter for below-threshold-biasing VCSEL operation

Turn-on Time Delay of Uncooled Semiconductor Laser Diode Subject to External Optical Feedback: Theoretical Analysis

Contact Info

Product

Resources

About