Pin 6 (TEC+) is missing, so you cannot do temperature control. You can still use lasing for some of your research, you need apply enough heatsink in your test.

Pf=10mW-average (20mW peak). For analog DWDM signal. All lasers are with SC/APC connectors. 900um-buffered SMF. Leads are wide type. See more info at pdf datasheet link below.

Manufacture date: Mostly Dec. or Sept. 2000, some are April 2000.

The 1751 laser module is a Dense Wavelength-Division Multiplexing (DWDM) laser for analog applications. It features a distributed feedback chip that has been designed specifically for Radio Frequency (RF) applications. The 1751 laser module has a wide temperature range for reliable performance in harsh node environments and narrow transmitter designs. It also features low adiabatic chirp to maximize signal quality in short and long lengths of fiber. The laser’s excellent inherent linearity minimizes degradation of the broadcast signals caused by quadrature amplitude modulated (QAM) channels. The versatile 1751 laser module reduces cable network architecture fiber needs and lessens equipment requirements in the hub.