A5038314947- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Advanced Fiber Laser Technologies
- Optical Wireless Communication Technologies
- Solid State Laser Technologies
- Analytical Chemistry and Sensors
- Advanced Fiber Optic Sensors
- Molecular Junctions and Nanostructures
- Advanced Optical Network Technologies
Infinera (United States)
2021
Georgia Institute of Technology
2014-2020
Short reach optical interconnects must support higher data rates to manage the increasing needs of end users and commensurate increase in storage computation within between centers. VCSEL-based MMF links provide a power efficient solution which is achieved part by maximizing rate per laser source. We design an archetype system explore challenges benefits signal processing with currently available technology. By careful use at both transmitter receiver, we experimentally demonstrate 107 Gb/s...
We demonstrate a path to 1-Tb/s VCSEL-based links using wideband multimode fiber (WBMMF/OM5), which provides an extended effective modal bandwidth ranging from 844 948 nm. Using 850-, 880-, 910-, and 940-nm vertical cavity surface emitting lasers (VCSELs), we quantify the benefits of electronic pulse-shaping channel equalization for both pulse-amplitude modulations (PAMs), i.e., PAM-2 PAM-4. that all these VCSELs support error-free performance (bit error rate <;10 <sup...
We experimentally demonstrate error-free rates beyond 100Gbps over 100m WBMMF. Power penalties and maximum data of PAM-2 PAM-4 using shaped unshaped pulses were studied. The link includes unpackaged 850nm VCSELs with different apertures only transmitter equalization.
The correlation properties of vertical-cavity surface-emitting laser (VCSEL) transverse modes determine the noise impairments VCSEL-based high-speed MMF links. Relative intensity and mode partition originate from distinct aggregate fluctuations lasing VCSELs. These mechanisms are often limitations in optical links particularly 25 Gbaud higher OOK PAM-4 an integral part any link budget including those IEEE 802.3 fiber channel T11.2 standards efforts. Here, we report direct measurement We show...
We experimentally demonstrate error-free transmission of 50Gbit/s PAM-4 signals over OM3 and prototype wideband fiber using 1060nm VCSELs. FEC-conformed performance is demonstrated 200m. An analytic model allows identification penalties demonstrates negligible MPN.
We experimentally demonstrate PAM-4 data rates beyond 160Gbps over 50m OM5 using unpackaged 850nm VCSELs. Power penalties of are examined demonstrating maximum rates, with and without FEC, 100m fiber.
We demonstrate robust error-free transmission of 51.56 Gbit/s PAM-4 over multiple examples 100m multimode fiber with 905nm VCSELs. further the need to include level dependent RIN when assessing impairments and predicting performance MMF links.
We present an analysis of pulse-amplitude modulation 4 (PAM) based multimode fiber (MMF) links using VCSELs at 850 and 1050 nm across a wide range profiles with effective modal bandwidth spanning from 2 to 10 GHz·km. demonstrate speeds >51.56 Gbit/s over set standard OM3 OM4 fibers bit error rate (BER) <;10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-12</sup> pseudo random sequence 7, up reaches 150 m BER <;2 ×...
We demonstrate 100 Gbps PAM-4 transmission over 105m of wideband-MMF for each four wavelengths from 850nm to 940nm using 25G VCSELs and thereby an architecture that enables 400G a single MMF.
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text S. E. Ralph and J. Lavrencik, "High Capacity VCSEL Links," in Optical Fiber Communication Conference (OFC) 2019, OSA Technical Digest (Optica Publishing Group, 2019), paper Tu3A.1. Export BibTex Endnote (RIS) HTML Plain alert Save article
We develop a new model to describe the Mode Partition Noise (MPN) in VCSEL-Based Multi-Mode Fiber (MMF) links starting from well-known Langevin noise-driven laser rate equations. Using spatio-temporal representation of equations for VCSEL transverse modes, we comprehensive physical noise properties using covariance (COV) matrix approach. Neglecting second-order effects, then reduce COV elements three VCSELspecific parameters α, k <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We experimentally demonstrate error-free (BER <10−12) rates beyond 100Gbps over 100m OM5 using unpackaged 1060nm VCSELs. Power penalties of PAM-2/PAM-4 are examined demonstrating fiber capacity to support wavelengths with only transmitter equalization.
We experimentally demonstrate 90Gbps error-free PAM-2 transmission and 102Gbps below the KP4 FEC threshold over 50m OM5 multimode fiber at 850nm The link includes unpackaged VCSELs with 26GHz bandwidth implements limited linear equalization raised cosine pulse shaping.
Single mode (SM) VCSELs, produced in industrial 4” technology, are suitable for 100Gb/s PAM2 and >160Gb/s PAM4 data transmission. >107Gb/s transmission over 1km of multimode (MM) fiber at 850nm 910nm is realized.
Cross-correlations between VCSEL transverse modes are synchronously observed and used to predict kmpn dispersion dependent RIN. Experiments with MMF of different slope confirm importance reach-dependent RIN currently neglected in the IEEE model.
The correlation properties of vertical-cavity surface-emitting laser (VCSEL) transverse modes determine the noise impairments VCSEL-based high-speed links. crosscorrelation statistics between VCSEL mode pairs and autocorrelation for each are directly measured using real-time 40GSs synchronous observations spatially separated modes. Anticorrelation was found to be different along with some positive correlations modes, contradicting assumptions IEEE model partition in multimode fiber These...
Cross-correlations of VCSEL transverse mode groups with different apertures are used to predict dispersion dependent RIN. Experiments wideband multimode fiber confirm the noise enhancement dependence on aperture, which increases fewer VCSELs.
We demonstrate effective transmitter equalization for 850nm, 980nm, and 1060nm VCSELs 100m OM5 links enabling 78Gbps PAM-2 >100Gbps PAM-4 error free links. Extracted link penalties reveal net fibre dispersion RIN enhancement create small to negligible power all wavelengths.
1.6 Tb/s optical engine is enabled through vertical integration of a 2-channel monolithic InP PIC with SiGe electronics and real-time DSP ASIC operating at 100 Gbaud for 800 Gb/s transmission.
We demonstrate and analyze polybinary signaling as a low complexity alternative to PAM-4 for achieving higher bitrates in VCSEL-MMF links. Experimental results that duobinary polybinary-3 achieves similar performance through 105m of wideband fiber at 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−12</sup> BER.
Extraction of VCSEL rate equation model parameters through joint optimization modulation response and RIN spectra is presented. It accurately accounts for both ISI noise, employs drive-dependent parasitics found in VCSELs.
Cross-correlations between VCSEL transverse modes are measured using 40GSps synchronous observations of spatially separated modes. Positive correlation and anti-correlation behaviors observed as well low, distinct kmpn, contrary to assumptions the IEEE model.
MMF propagation of multimode VCSEL signals with preferential coupling modes into fiber and colored noise is modeled benchmarked using 50Gbps PAM-4 25Gbps PAM-2 experimental results at 850nm 940nm.
Modulation rates of VCSELs within multimode fiber links are now 25Gbps as standardized by both IEEE and Infiniband. Yet the need continues to advance serial data 50Gbps higher more readily support 100Gbps with manageable count. At these modulation VCSEL dynamics cannot be accurately modeled single mode sources coupled into a MMF simple filter. Specifically, our recent experimental results demonstrate limitations standard partition noise relative intensity models. By direct measurement we...
Data transmission at 55 Gbps is achieved across 100 meters of optical fiber with a bit error ratio below 1 E-12 980 nm single cavity oxide aperture diameter vertical surface emitting lasers.