28 September 2015

GigOptix gives live 100GbE interoperability demo of 100G short-reach chipset and 28G quad CMOS CDR with II-VI's VCSELs

In booth #702 at the European Conference on Optical Communication (ECOC 2015) in Valencia, Spain (28-30 September), GigOptix Inc of San Jose, CA, USA (a fabless supplier of high-speed semiconductor and optical communications components for long-haul and metro telecoms, cloud and data-center connectivity datacoms, point-to-point backhaul wireless applications, and interactive interfaces for consumer electronics links via fiber-optic and wireless networks) is showcasing a live demonstration utilizing its third-generation 100Gbps short-reach chipset with its new 28Gbps quad CMOS CDR (clock & data recovery) product and the vertical-cavity surface-emitting laser (VCSEL) solutions of II-VI Inc of Saxonburg, PA, USA.

The HXC42400 quad CMOS CDR is a new addition to GigOptix's datacom portfolio, resulting from the acquisition in September of Terasquare, and complements the HXT8204 28Gbps quad-channel vertical-cavity surface-emitting laser (VCSEL) driver array and HXR8204 28Gbps trans-impedance (TIA) receiver array (both launched in March) to provide a complete 'one-stop shop' chip-set solution offering to enable next-generation short-reach SR4 (100m) and extended-reach SR4 (eSR4 – 300m) module and active optical cable (AOC) applications.

Due to its unique architecture, GigOptix's new quad-channel HXC42400 25–28Gbps CMOS CDR enables what is claimed to be industry-leading low power dissipation and the industry's first solution with programmable receiver and transmitter bandwidth in a single device to optimize input jitter tolerance (IJT) and output jitter for superior link performance. To maintain and optimize signal integrity (SI) under adverse insertion loss (IL) situations, the HXC42400 includes up to 16dB of programmable continuous time linear equalization (CTLE) and a 1-tap decision feedback equalizer (DFE) with a 3-tap programmable de-emphasis block provides up to 12dB gain for the pre- and post-taps. It features reference-less operation and many on-chip testability features including Eye-Monitor (iMON), PRBS generator/checker, an arbitrary pattern generator, and a unique jitter tolerance (JTOL) test capability.

The HXT8204 four-channel VCSEL driver supports modulation and average VCSEL currents up to 10mA with a dedicated BURN-IN capability up to 15mA average current. The 1MHz I2C interface enables full control of all driver functions including input equalization, output peaking and peaking duration, signal detect and squelch, channel polarity inversion, diagnostics such as average current and temperature monitoring as wells as user-maskable interrupts and VCSEL voltage supervisory functions.

The HXR8204 four-channel receiver with integrated TIA provides 60uAPP input sensitivity at 28Gbps with 10-12 bit error rate (BER), AGC and ATC, and a limiting post-amplifier stage. Linear, per-channel RSSI outputs are provided to enable active alignment during manufacturing to provide optimum performance and manufacturability. The 1MHz I2C interface enables full control of additional functionality such as signal detect and squelch, pre-emphasis, maskable interrupt generation, internal temperature monitor selection, channel polarity inversion, and output voltage swing with enable.

"GigOptix is very appreciative of our long-standing relationship with II-VI and pleased to introduce our latest product offering while showcasing and expanding the interoperability of our two companies' solutions," says GigOptix's Datacom marketing director Tom Kapucija. "Our complete solution now offers leading optical link reach with robust performance and unique on-chip testability features," he adds. 

"As a chip vendor open to the Datacom market, II-VI Laser Enterprise appreciates the flexibility and completeness of the GigOptix offer on the ICs market," says Michele Agresti, Datacom VCSELs product line manager at II-VI Laser Enterprise. "We are now looking forward to reinforcing and consolidating our cooperation, leveraging the success of our new 25Gb/s 850nm VCSEL and new GigOptix 25-28Gb/s driver/TIA chipset," he adds.

The HXC42400, HXT8204 and HXR8204 are suitable for optical module, active optical cable, and optical engine applications with their partitioning of the CDR power dissipation from the temperature-sensitive, high-performance VCSEL, VCSEL driver, photo-detector, and TIA circuit elements for 100m and extended-reach applications. The solution is applicable to 100G Ethernet (QSFP28, CFP2, CFP4), OUT-4, 32Gbps Fibre Channel, and EDR Infiniband.

See related items:

GigOptix to acquire CMOS SerDes supplier Terasquare

GigOptix launches 3rd-generation 100G Ethernet chipset

MACOM announces CDR+VCSEL driver interoperability with II-VI VCSELs

Tags: GigOptix AOC 100G optical modules II-VI Inc VCSEL VCSEL driver TIAs

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