Executive Summary Gore Associates, Inc. completing development versati

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Executive Summary Gore Associates, Inc. completing development versati

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nLIGHTEN PARALLEL FIBER OPTIC DATA LINK
Executive Summary Gore Associates, Inc. completing development versatile family multichannel optical transmitters receivers targeted intrasystem short reach inter-system high data rate communication links. transmitter module utilizes Gore's Vertical Cavity Surface Emitting Laser (VCSEL) technology which makes multi-Gigabit/sec data rates possible while minimizing space cost. nLIGHTEN modules offer improvement density over standard serial transceiver products significant reductions costs same time. utilizes 62.5 multimode fiber operational wavelength Gore combined technology high density packaging, precision micromolding VCSELs with knowledge high performance data link requirements develop nLIGHTEN family high bandwidth*density, cost-effective, transmission products. nLIGHTEN Features Robust Link Performance Gore VCSEL Technology Jitter Receiver Sensitivity Margin High Bandwidth*Density Versatile Mounting Options Standard Interface Multi-Source Footprint Design
nLIGHTEN Parallel Fiber Optic Transmitter
nLIGHTEN Receiver Parallel Fiber Optic Transmitter Pattern
Robust Link Performance Gore VCSEL Technology nLIGHTEN modules deliver Gbits/sec/channel data rates over multimode ribbon fiber cable. This made possible Gore's unique high speed VCSEL technology which only provides scalability higher data rates, also very stable light output over typical system temperature variations. Gore VCSELs have been demonstrated data rates 12.5 Gbps. This bandwidth headroom allows wide open optical eyes, forming foundation nLIGHTEN's robust link operation. Jitter Both copper fiber optic data links create timing uncertainties, jitter, transmitted data stream resulting closure. Jitter optical data links combination effects; Inter-Symbol Interference (ISI) created
High Data Rate Performance: Gore's nLIGHTEN Parallel Fiber Optic Receiver, 1.25 Gbit/s PRBS) minimum receive power (-18dBm).
Gore Associates, Inc. 1-800-445-4673 302-737-2819 Visit website www.gore.com
Europe 1382 561511 1382 561007
Comparison channel nLIGHTEN Module utilizing optical with serial transceiver employing dual optical I/O.
bandwidth constrictions data path, Duty Cycle Distortion created timing variations rising falling edges data stream, Random Noise-created crosstalk thermal noise circuits. Gore's design minimizes these effects through increased bandwidth active passive components. signal integrity data ensured careful design, simulation fabrication transmission line path. bandwidth Gore's VCSEL devices photodetectors exceed GHz. laser driver photo receiver circuits fabricated high performance silicon bi-polar process have been designed meet broadly utilized Gigabit Ethernet (IEEE 802.3) jitter budget.
Gore nLIGHTEN
nLIGHTEN module channels received power. This margin sensitivity allows designers statistically estimate typical errors substantially below specified 10-12. High Bandwidth Density Gore's parallel array module provides about Gbps/inch Gbps/ Bandwidth Density edge board. comparison, this approximately eight times higher than serial transceiver modules. Through creative designs Gore's unique high density packaging technologies, we've created module that just slightly wider than cable connector that plugs Versatile Mounting Options nLIGHTEN modules typically mounted edge printed circuit board shown above. Other mounting options "In-Board" where connector interface does overhang edge "Thru-Backplane" which will directly mate with emerging backplane adapters being introduced part 1076-4-101 backplane connector families. Standard Interface Gore parallel array module easily cabled using standard ribbon fiber connector (IEC 1754-7 TIA/EIA 604-5). This interface chosen because years proven performance telecommunications computing systems. only optical array connector currently available from multiple sources. "recommended" optical connector HiPPI 6400 with cable assemblies available through large number qualified vendors. Multi-Source Footprint Design anticipation market needs, Gore entered into multi-source agreement with other suppliers. modules designed common specifications, footprints, functionality.
Module Receiver Sensitivity
room temperature,Vcc=3.3V -1prbs 1.25Gbps
Error Rate
Ch10 Ch11 Ch12
measurement floor
bits
-24.0
-23.0
-22.0
-21.0
-20.0
-19.0
optical input
Receiver Sensitivity Margin While optical budget nLIGHTEN link specifies minimum receive power -18dBm (for infinite extinction ratio), typical sensitivity achieved better than -21dBm. sensitivity plot shows
Transmitter/Receiver Drawing
Dimensions Shown
Preliminary nLIGHTEN
General Power Dissipation Power Supply Operating Case Temperature Optical Parameters Data Rate Launch Power (ave) Extinction Ratio Center Wavelength Spectral Width (rms) Relative Intensity Noise Output Risetime (20-80) Output Falltime (20-80) Total Jitter (pk-pk) Deterministic Jitter Channel-Channel Skew Symbol 3.135
Transmitter Specifications
Typical 1305 3.465 0.85 -117 Units Units Gb/s dB/Hz Notes
Symbol Pout
Typical 1.25
Notes
Notes: Maximum average power exceed lesser 825-1 Class laser safety CDRH part 1040 Class laser safety requirements. Minimum average power equivalent (Optical modulation amplitude). defined difference optical power between logic logic defined HiPPI-6400 Optical specification. Equals defined IEEE 802.3z Gigabit Ethernet Specification Section 38.5. Electrical Parameters Differential Amplitude Input Common Mode Input Overshoot Input Impedance Symbol IH-VILI Typ. Unit Notes
Notes: Into differential termination. Common mode (logic threshold) relative ground. On-module termination: input-to-complementary input.
Preliminary nLIGHTEN
Name WDOUT
Transmitter Description
Name WDRST LINKEN Description Logic Level Notes Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Connected Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Connected Watchdog Reset CMOS Input Ground Ground Link Enable CMOS Input Connected Connected Connected Connected Power Supply Voltage
Description Logic Level Notes Power Supply Voltage Connected Connected Connected Connected Watchdog Ouput CMOS Output Ground Ground Connected Connected Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Connected Input Inverted LVDS Input Non-Inverted LVDS Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground Input Inverted LVDS Input Non-Inverted LVDS Ground Ground
Notes: Bypass capacitor Tantalum .1µF recommended.
Preliminary nLIGHTEN Receiver Specifications
General Power Dissipation Power Supply Operating Case Temperature Optical Parameters Data Rate Receive Power (ave) Center Wavelength Return Loss Total Jitter (pk-pk) Deterministic Jitter Channel-Channel Skew Symbol 3.135 Typical 1500 2500 3.465 Units Units Gb/s Notes
Symbol Skew
Typical 1.25
Notes
Notes: With balanced data pattern maximum length less than nsec. 10-12. minimum equivalent infinite extinction ratio (Optical modulation amplitude). defined difference optical power between logic logic1 defined HiPPI-6400 Optical specification. Return loss measurement defined TIA/EIA FOTP-107 Equals defined IEEE 802.3z Gigabit Ethernet Specification Section 38.5.
Preliminary nLIGHTEN
Electrical Parameters Differential Amplitude Output Rise Time Output Fall Time Output Common Mode Output high state Output state Output overshoot Duty Cycle Distortion Symbol VOH-VOLI
Receiver Specifications Continued
typ. 1275 1475 unit notes
1125
Notes: Into differential termination. Measured between levels. Common mode (logic threshold) relative ground.
Preliminary nLIGHTEN Receiver Description
Name LNKE DVAL Out1a Out1b Out2a Out2b Out3a Out3b Out4a Out4b Out5a Out5b Out6a Out6b Description Logic Level Notes Ground Power Supply Voltage Power Supply Voltage Connected Link Enable CMOS input Data Valid output CMOS output Power Supply Voltage Ground Connected Ground Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Connected Output Non-inverted LVDS Output Inverted LVDS Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Name Out7a Out7b Out8a Out8b Out9a Out9b Out10a Out10b Out11a Out11b Out12a Out12b DVAL Description Logic Level Notes Output Non-inverted LVDS Output Inverted LVDS Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Ground Output Non-inverted LVDS Output Inverted LVDS Connected Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Output Non-inverted LVDS Output Inverted LVDS Ground Ground Ground Connected Ground Power Supply Voltage 3.3V Data Valid output CMOS Output Connected Connected Power Supply Voltage Power Supply Voltage Ground
Notes: Analog Vcc. Recommend ohm@100 ferrite bead host board Vcc. Part Numbers: Steward HZ0805E601R Digi-key specifications within subject change without notice. part 240-1-18-1-ND CMOS Output. pull-up resistor required. Copyright 2000 Gore Associates, Inc. Bypass capacitor Tantalum .1µF recommended. nLIGHTEN, Gore, Design trademarks Gore Associates,
Gore Associates, Inc. 1-800-445-4673 302-737-2819 Visit website www.gore.com
Europe 1382 561511 1382 561007
F109 2/20 CTREE

Executive Summary Gore Associates, Inc. completing development versati

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