The CFP2-ACO 100/200G coherent module utilizes a trio of indium phosphide (InP) based PICs, covering the laser, modulation, and receiver functions. Through integration, we have enabled almost complete on-wafer test of our PICs. We can automatically identify good die for assembly and map all key parameters at wafer level to maintain process control and integrity. Monolithic integration is ideally suited to support much higher levels of functionality moving forward, as we progress beyond 200G per carrier into superchannel modules.
The 100 and 200 Gbps per wavelength CFP2 digital coherent optical transceiver incorporates Lumentum co-packaged indium phosphide (InP) PICs including Lumentum narrow linewidth tunable laser, both the Lumentum InP Mach-Zehnder modulator and the Lumentum micro-intradyne coherent receiver (µICR) with integrated VOA, together with the industry’s most interoperable digital signal processing (DSP) ASICs to support 100 Gbps PM-QPSK and 200 Gbps PM-8/16QAM transmissions.
The Lumentum high-bandwidth coherent driver modulator (HB-CDM) is an OIF-compliant integrated component for coherent applications and features a four-channel modulator driver integrated circuit, co-packaged with two nested modulators, designed to modulate amplitude and phase of the input light in both polarizations. The Mach-Zehnder (MZ) structures embed semiconductor optical amplifiers (SOAs) that can be used to reduce insertion loss or to balance power in the two polarizations. The device features two SOAs per polarization and are current controlled. This configuration allows the design of transceivers with a single laser split between transmitter and local oscillator. The temperature of the InP modulators is controlled by a thermoelectric cooler.
Control of the modulators is via analog voltage inputs to the module. Control of the driver is via SPI digital control interface, plus analog control signals. The device features monitoring photodiodes to detect power and provide feedback for control loops.
The module has one input fiber (from a CW laser) and one output fiber. The RF input contacts are located at the rear of the package (opposite the fibers) and use a GSSG pattern. 40 low-speed contacts located at the side of the package provide power supply, control signals, and the digital SPI interface.
The HB-CDM mechanical outline is the standard OIF Type 1 MSA size (30 mm x 12 mm x 6.5 mm). Electrical interfaces are provided through the 40-pin connector.
Features
The Lumentum ICT is a C-band (196.1 to 191.15 GHz) flex-tuneable transmitter gold box, developed as an enabling source for analog and digital module integration, or line-card developments.
The transmitter comprises full-band narrow linewidth DSDBR tunable laser, and dual-Cartesian Mach-Zehnder modulator, fabricated on indium phosphide (InP), and encapsulated with polarization multiplexer and coupling optics inside a fully hermetic package.
A single InP laser source with integrated SOA is used to derive both the local oscillator and Mach-Zehnder transmit local oscillator (LO) power.
Monolithically integrated SOAs are integrated on input and output arms of the modulator, enabling power to be balanced on each input polarization, and overall transmit power to be adjusted.
Output shuttering is enabled via an independent output VOA. This permits the LO to be maintained regardless, as required for certain application configurations.
Features
The Lumentum coherent flex-grid tunable co-packaged transmitter and receiver device (TROSA) is self-contained and does not require any external optical or optoelectronic components. The compact package footprint and high performance are enabled by Lumentum highly integrated indium phosphide (InP) optical chip technology, used to realize the laser, modulator, and receiver functionality.
The transmitter comprises full C-band flex-grid narrow-linewidth DSDBR tunable laser, a dual-QPSK Mach-Zehnder (MZ) modulator, Tx driver, polarization multiplexer, and coupling optics. A common laser is used to provide a transmit source to the MZ modulator and local oscillator (LO) source to the co-packaged Rx optical hybrid.
An internal close-coupled 43 GBaud RF driver helps optimize signal integrity to the MZ modulator, and monolithically integrated InP SOA functions on the modulator help compensate for additional optical losses at higher modulation rates (up to DP-16QAM).The modulator output SOA function provides power adjustment and shuttering capabilities, independent of the laser control.
The receiver block combines dual-polarization hybrid PIC to mix the incoming signal with internally generated local oscillator, quad-channel differential linear TIA to provide the O-to-E conversion, and peripheral monitors for signal and total power measurement. The InP hybrid integrates on-chip VOA functions to optimize performance.
Transmit and receive functions are integrated into a single compact fully-hermetic package, with optical interfaces compatible with the industry standard LC connectors.
Features
The Lumentum LambdaFLEX™ micro-ITLA is a high performance, narrow linewidth, continuous wave (CW), tunable laser source designed for 400G/600G coherent modules and linecards. The micro-ITLA features high output power, a small form factor and low power dissipation specifically designed to meet the needs of next-generation coherent applications. The DS-DBR laser is based on a fully monolithic InP chip designed for high-volume, low-cost manufacturing. With no moving parts, it is a low voltage, electronically tuned device enabling rapid wavelength switching with straightforward control electronics.
The laser and control electronics are pre-mounted on a dedicated circuit board for easy production installation. The micro-ITLA features shuttered tuning, optical power control, off-grid tuning, and narrow linewidth. Comprehensive control and system reporting is provided over the RS232 interface.
The micro-ITLA incorporates the next-generation version of a Lumentum DS-DBR wideband tunable laser. The integrated semiconductor optical amplifier (SOA) provisions the optical power control and also acts as a shutter to allow dark tuning when reverse biased.
Laser chip operation is at a stabilized temperature. Wavelength stability is guaranteed by an internal wavelength locker for control. Facet output power monitoring is also provided by an integral photodiode.
The device is provided with polarization-maintaining fiber for use with an external modulator.
The product is offered in both a micro-ITLA format (TL5400) and a dual-ITLA format (TL5470). The dual-ITLA format contains two fully independent lasers through one electrical interface, offering a significant footprint reduction.
Features
The Lumentum LambdaFLEX™ micro-ITLA is a high performance, narrow linewidth, continuous wave (CW), tunable laser source designed for 100G/200G coherent modules and linecards. The micro-ITLA features high output power, a small form factor, and low power dissipation specifically designed to meet the needs of next generation coherent applications. The DS-DBR laser is based on a fully monolithic InP chip designed for high volume, low cost manufacturing. With no moving parts, it is a low voltage, electronically tuned device enabling rapid wavelength switching with straightforward control electronics.
The laser and control electronics are pre-mounted on a dedicated circuit board for easy production installation. The micro-ITLA features shuttered tuning, optical power control, off-grid tuning, and narrow linewidth. Comprehensive control and system reporting is provided over the RS232 interface.
The micro-ITLA incorporates the Lumentum DS-DBR wideband tunable laser. The integrated semiconductor optical amplifier (SOA) provisions the optical power control and also acts as a shutter to allow dark tuning when reverse biased.
Laser chip operation is at a stabilized temperature with off-grid tuning implemented thermally to achieve ±9 GHz un-shuttered fine tuning. Wavelength stability is guaranteed by an internal wavelength locker for control. Facet output power monitoring is also provided by an integral photodiode.
The device is provided with polarization-maintaining fiber for use with an external modulator.
The product is offered in both a micro-ITLA format ((TL5300/TL5350) and a dual-ITLA format (TL5370). The dual-ITLA format contains two fully independent lasers through one electrical interface, offering a significant footprint reduction.
Features
The Lumentum micro coherent receiver module is designed to meet mechanical and performance requirements of the ICR for CFP2 Coherent optics (OIF Implementation Agreement Proposal - OIF-DPC-MRX-01.0).
The gold box has two optical input fibers, corresponding to signal and common local oscillator (LO) inputs.
A variable optical attenuator (VOA) and monitor photodiode (MPD) are included in the signal path to enable the incoming power level to be monitored and adjusted.
The polarized light is separated internally via PBS to recover two orthogonal polarizations that are steered to two 90° optical hybrid phase mixers. The hybrid beats the transmit signal with the local oscillator to allow the appropriate wavelength signal to propagate.
Each of the mixer outputs is connected with photodetector pairs that are interconnected to four linear transimpedance amplifiers (TIAs) that perform O-to-E conversion for downstream signal processing.
The transimpedance amplifiers can operate in auto or manual mode, with adjustable output or gain (configurable via MDIO), and feature shutdown and bandwidth adjustment controls.
Device packaging represents SMT interfaces on 0.8 mm pitch with corner mounting points to allow attachment to host PCB.
Features
The Lumentum micro coherent receiver module features 64 Gbaud/64-QAM supporting rates up to 600 Gbps. It is designed to meet mechanical and performance requirements of the ICR for CFP2 coherent optics (OIF Implementation Agreement Proposal - OIF-DPC-MRX-01.0)
The gold box has two optical input fibers, corresponding to signal and common local oscillator (LO) inputs.
A variable optical attenuator (VOA) and monitor photodiode (MPD) are included in the signal path to enable the incoming power level to be monitored and adjusted.
The polarized light is separated internally via PBS to recover two orthogonal polarizations that are steered to two 90° optical hybrid phase mixers. The hybrid beats the transmit signal with the local oscillator to allow the appropriate wavelength signal to propagate.
Each of the mixer outputs is connected with photodetector pairs that are interconnected to four linear transimpedance amplifiers (TIAs) that perform O-to-E conversion for downstream signal processing.
The transimpedance amplifiers can operate in auto or manual mode, with adjustable output or gain (configurable via MDIO), and feature shutdown and bandwidth adjustment controls.
Device packaging represents SMT interfaces on 0.8 mm pitch with corner mounting points to allow attachment to host PCB.
Features
The Lumentum LambdaFLEX™ Tunable 10 Gbps TOSA is a high-performance tunable laser transmitter incorporating the Lumentum DSDBR wideband tunable laser, monolithically integrated with InP Mach-Zehnder modulator (MZ). With no moving parts, it is a low voltage electronically-tuned device enabling rapid wavelength switching with straightforward control electronics. An integrated semiconductor optical amplifier (SOA) provisions the optical power control and also acts as a shutter to allow dark tuning when reverse biased.
Wavelength control is achieved with the internal wavelength locker in conjunction with an external control scheme which interfaces to the laser via the ASIC. The ASIC allows ease of integration and incorporates a 14 bit, multichannel current output DAC providing an I2C interface to the laser, SOA, and M-Z functions. The device will lock to either a 50 GHz or 100 GHz ITU wavelength grid. Output power monitoring is provided by an integrated tap electrode.
Modulation at up to 11.3 Gbps is applied via differential inputs to the InP Mach-Zehnder modulator. Separate M-Z bias inputs permit precise setting of extinction ratio (ER) and crossing point.
Features
Today’s ROADM networks have served the industry well, but their limitations are constraining operators’ plans for future growth. Broadcast-and-select architecture, hardwired fixed-wavelength arrayed waveguide grating (AWG) add/drops, and limited wavelength selective switch (WSS) port scalability do not offer the performance or network responsiveness now required. Channel turn-up and re-provisioning still require manual intervention; protection is still achieved with expensive transceiver duplication; and, data rate growth is constrained by fixed wavelength configurations. Carriers are looking to colorless/directionless (CD) and colorless/ directionless/contentionless (CDC) ROADMs to extend their network flexibility.
A new, flexible ROADM architecture is emerging, enabled by the Lumentum TrueFlex® ROADM portfolio. It incorporates a route-and-select configuration with a WSS in each direction—one each for mux and demux. This allows drop-path filtering and improves express-path isolation and loss for better network reach. For add and drop traffic, MxN WSS technology and multicast switching are optimized for CD and CDC respectively. ROADM architecture requires fully flexible spectral control and monitoring so that carriers can evolve to higher modulation formats and guardband-free superchannels for maximum system capacity and reach.
Hallmarks of a TrueFlex ROADM architecture include:
Modern metro networks are increasingly embracing TrueFlex colorless directionless (CD) or colorless directionless contentionless (CDC) ROADM architectures as a key enabler towards the goal of realizing a dynamic network. Flexible and reconfigurable transport networks demand a high level of optical functionality and performance while adhering to strict boundary constraints imposed by real-estate and power-consumption limits in a central office. Functional integration—a holistic approach that brings together diverse transport functionality such as optical switching, amplification, and monitoring onto a single high-density line card such as the ROADM-on-a-Blade—enables realizing these competing objectives.
Lumentum customizes ROADM-on-a-Blade designs for network equipment manufacturers (NEMs) and ensures seamless integration into their systems. As a pioneer of the Super Transport Blade, Lumentum has been helping early-adopter NEMs remain at the forefront of ROADM deployments since 2008.
The ROADM-on-a-Blade (single-slot) is now the industry benchmark for TrueFlex CD/CDC ROADM solutions in the metro network, as it delivers more than a 50% savings in space and power relative to a conventional approach with multiple line cards.
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