My parents have a similar L-shaped corridor layout. I would suggest you change the orange glass for clear glass (if it has a pattern or is frosted you'll still get privacy).
If you paint the walls a pale colour or white that will help - one thing I would strongly recommend you NOT do is use a dado rail or picture rail, as this will only make your corridor look longer and lower.
If you have any furniture in the hallway (console table, chairs, etc) then either painting it white or replacing it with white or light coloured furniture will also brighten it up. You can add coloured ornaments or cushions to stop it looking bland or colourless.
Never underestimate the power of mirrors to both increase light and make a small (or in your case narrow) space feel bigger (or wider). But pictures with reflective glass in the frames will also have a reflective effect (and also bring in colour to stop things looking bland or bleached out).
Finally I would suggest you use uplighters to make the make it feel more spacious - if you currently have pendant lights replace the lightshades with uplighter shades (they look like upside down shades, you can get them in most places), you'll be surprised at the difference that alone will make to the feeling of space.
Re the floors, I wouldn't go for tiles or wood on the floor as presumably all your bedrooms open off this hallway and it will be very echoey with wood or tile and anybody in the corridor will disturb anybody in the bedrooms. If you're dead set against carpet a good lino might work for you - the quality available is excellent now, and looks very realistic.
Good luck with it anyway