Apparatus for sequential optical systems where an independently controllable transmission gate is interposed between successive optoelectronic gates

Apparatus comprising

• first optoelectronic gate means having a logical state controllable by a first optical input signal and for generating a first electrical signal representative of said logical state of said first optoelectronic gate means,
• first transmission gate means electrically coupled to said first optoelectronic gate means for selectively transmitting said first electrical signal,
• second optoelectronic gate means having a logical state controllable by a second optical input signal and for generating a second electrical signal representative of said logical state of said second optoelectronic gate means,
• second transmission gate means electrically coupled to said second optoelectronic gate means for selectively transmitting said second electrical signal, and
• third optoelectronic gate means electrically coupled to said first and second transmission gate means and having an optical state controllable by said selectively transmitted first electrical signal and controllable by said selectively transmitted second electrical signal.

Apparatus comprising

• first optoelectronic gate means having a logical state controllable by an optical input signal and for generating an electrical signal representative of said logical state of said first optoelectronic gate means,
• first transmission gate means electrically coupled to said first optoelectronic gate means for selectively transmitting said electrical signal generated by said first optoelectronic gate means,
• second optoelectronic gate means electrically coupled to said first transmission gate means and having an optical state controllable by said electrical signal selectively transmitted by said first transmission gate means,
• second transmission gate means electrically coupled to said first optoelectronic gate means for selectively transmitting said electrical signal generated by said first optoelectronic gate means, and
• third optoelectronic gate means electrically coupled to said second transmission gate means and having an optical state controllable by said electrical signal selectively transmitted by said second transmission gate means.