With the soundbar being a 2.1 output, you really don't need to connect the Blu-Ray player to the soundbar using an optical cable. The audio from the Blu-Ray will go through the TV, and out the audio port to the soundbar.
There's no need to connect another optical cable.
I have Samsung which currently has Samsung Blue Ray Player and Satellite connected to TV thru HDMI.
Should I connect just 1 optical cable to connect this soundbar for both Satellite and Blue Ray Player or should I connect another optical cable from Blue Ray Player and continue to use HDMI to connect BLue Ray Player to TV ?