Is the Big Bang Theory the cause of the birth of light?

If we go by the theory of Big Bang, I think we need to conclude that light in some form of static or potential Energy ought to have existed and all that the explosion did was to release it in kinetic form to be able to travel through space and time. The BB is supposed to have created space and time.... hence I would presume that the energy before the bang was in such a condensed form that it literally required no space nor time to exist. It was energy and not necessarily in the physical form of light (photons) as we know it. In that sense, one can say that light as we experience was born due to the Big Bang.

Most answers will involve string theory and higher dimensions (ie. colliding branes in a 10 dimensional space). There are also theories that the universe has always existed and the big bang is not a singularity but merely an incredible hot and dense state that was preceded by a cooler and rarer time. Right now no one know and as stated before, physics can only start describing things a fraction of a second after the big bang.

You misuse the term "Theory", a theory cannot be a cause, a theory is an explanation of a process which might or might not include a cause. Light is part of the observable Universe and the Big Bang Theory is a description of the process of the start of the Universe that conforms to the current available facts, this means that BBT addresses light only in the sense that what applies to the Universe as a whole applies to all parts of it, light included.

It might be. It also might be that birth of light was

the cause of the Big Bang. It may

also be that the Big Bang did not occur.

It could even be that the Big Bang was actually

a Little Bang spun off be an infinite series

of Bigger Bangs. Ad infinitum.

You are mixing your metaphors. Light is not "born".

But to answer your question, No one knows what the origin of energy (light) and matter are before the Big Bang. Perhaps they were stored or saved up in the Bright Big Bang Bank.

a big bang would return light to the dark yes

i prefer to believe that the universe was never created and that big bangs are merely a part of the cycle of universal existence in which everything redistributed by the big bang expands until he shape of the univese forces the expannding material so tightly into a singualirty that another 'big bang' is created.

Though some beleive energy was created with the Big Bang this is pure speculation.

Most hold to the notion that energy can neither be created nor destroyed...

...and that the Big Bang was mearly energy changing forms.

It's just a theory

Yes, it is the birth of all.