Given an optical transmitter and receiver set, the most important question concerning a system designer or integrator is the maximum implementable link length.
To use the Optical Power Budget Calculator select a launch power and receiver sensitivity, then enter values for other required information (Link Length, Number of Patch Points, etc.)
Also try the Fiber Optic Product Selector Guide.
A transmitter's Optical Output Power appears under the Optical Output heading on the product's spec sheet and web page.
A receiver's Optical Sensitivity appears under the Optical Input heading on the product's spec sheet and web page.