20mW PMF CW laser (NEC P/N: NX8570SCxxxQ). Fiber is in 900um black buffer without connector, about 0.60 meter long. We will desolder and remove laser from PCB of unused transponder system(Store Product Code:OMS-TRx-1550-023K). See a sample at 1st photo below(not removed yet). Last 3 photos are for whole transponder system.
Product options: Tunable over 1558.173 - 1561.013nm, NX8570SC610Q Tunable over 1554.134 - 1556.959nm, NX8570SC569Q. Tunable over 1546.119 - 1548.915nm, NX8570SC489Q. Tunable over 1530.334 - 1533.073nm, NX8570SC330Q.
One laser can tune over 8x50GHz channels (over 3.2nm band) by temperature ! Make you much easier to find correct wavelength of 50GHz-spacing DWDM laser.
See more info in datasheet in the 1st pdf link below. If you need take use of excellent wavelength monitor function, you can make wavelength locking control circuitry, the driver info in the 2nd pdf link below may be useful for you.
DESCRIPTION
The NX8570SCxxxQ-BA is a 1550 nm Multiple Quantum Well (MQW) structured Distributed Feed-Back (DFB) laser diode module with wavelength monitor function. This device is temperature tunable over 8x50 GHz channels. Available at both C-band (1 530.334 to 1 565.087 nm) and L-band (1 565.496 to 1 608.760 nm) ITU-T grid wavelengths. This device is designed as CW light source and ideal for transmission systems in which external modulators are used.
FEATURES
Wavelength monitor function (Etalon Filter, Wavelength monitor PD)
Optical output power Pf = 20 mW MIN.
Available for DWDM wavelengths based on ITU-T recommendations
(50 GHz grid, please refer to the ORDERING INFORMATION)
8 channel wavelength tunable capability for 50 GHz-spacing
Internal thermo-electric cooler and isolator
Hermetically sealed 14-pin butterfly package
Polarization maintain fiber pigtail.
