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Lasers & Sources

40 mW tunable laser

NeoPhotonics, a leading supplier of photonic integrated circuit (PIC) based components, modules and subsystems for the telecom and CATV industries, will debut a new high power tunable laser for DWDM (dense wavelength division multiplexing) networks that has an output power of 40 mW and other features ideal for DQPSK coding and 40 Gbps systems.

At 40 mW optical output power, the NeoPhotonics® widely tunable NTL2040 laser can transmit at twice the output power of a standard ITLA. Special coding used in some 40 Gbps transmission requires higher optical power to overcome higher loss from additional optical components. In addition, 40 Gbps systems are much more sensitive to dispersion than 10 Gbps systems and require narrower linewidths and higher Side Mode Suppression Ratios (SMSR).

The external cavity design and output power of the NeoPhotonics NTL 2040 laser results in a narrow linewidth, low noise, high SMSR and high 40 mW power. The NTL2040 laser also enjoys all of the advanced features of NeoPhotonics NTL2000 series tunable lasers and can address all commonly used wavelengths in DWDM systems in the C, C+, L and XL bands, with channel spacing based on the "ITU-T" specified 50 GHz grid. Thus, one NTL2000 series tunable laser can replace any of 120 single wavelength lasers in the C+ or XL bands. As a result, the NTL2040 laser enables 40 Gbps transmission while also reducing the complexity and cost of systems design and lowering the cost of sparing and inventory.