Integrated Coherent TROSA
The CTR100AAA is a coherent flex-grid tuneable co-packaged transmitter and receiver device (TROSA). The TROSA is self-contained and does not require any external optical or optoelectronic components. The compact package footprint and high performance are enabled by Oclaro’s 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 tuneable laser, a dual-QPSK Mach-Zehnder (MZ) modulator, Tx driver, polarisation multiplexer and coupling optics. A common laser is used to provide a transmit source to the MZ modulator, and LO source to the co-packaged Rx optical hybrid.
An internal close-coupled 43GBd 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 (upto DP-16QAM).The modulator output SOA function provides power adjustment and shuttering capabilities, independent of the laser control.
The receiver block combines dual polarisation 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 & Receive functions are integrated into a single compact fully hermetic package, with optical interfaces compatible with the industry standard LC connectors.
Coherent 100G / 200G QPSK thru DP-16QAM source for Pluggable modules and on board optics
Integrated Coherent Transmitter and Receiver Optical Subassembly (TROSA)
Single C-band flex-grid narrow linewidth laser for transmit & LO functions
Integrated Tx Driver to optimize signal integrity & control
Transmitter power turn down and shuttering capability
Dual polarisation optical hybrid PIC with VOAs coupled to Rx Quad channel TIA
SPI interface control for Tx Driver and Rx TIA
Wide operating case temp range -5°C to +75°C & Low power dissipation – typ 6W