1 months post op Fraxel Laser, I am left with post inflammatory hyper pigmentation. Is this normal? (photos)

PIH is typical in darker skin type after aggressive lasering. Your treatment provider should guide you in using skin lighterners to help combat your PIH in a timely manner. 

Fraxel is a fabulous laser for treating sun damage, fine lines, sun spots, acne scars and overall skin tone and texture. Asian skin is very sensitive and not all lasers were designed to treat type IV skin.  I would return to your treating physician for evaluation and help with treating this hyperpigmentation.  For the best cosmetic results please consult a board certified dermatologist with experience with Fraxel laser.

Post inflammatory hyperpigmentation,
while undesired, is not an unusual side effect from Fraxel when treating Asian
or darker skin.Sun protection and
topical creams like hydroquinone and others can help lighten the dark areas
more quickly. The majority of cases do fade to normal over time. See your
dermatologist about a prescription for some fading cream.

That is postinflammatory hyperpigmentation (PIH).   Usually occurs 3-4 weeks after treatment. It can be improved with topical hydroquinone and Retin A. Protect from the sun. It has been shown that pre and post treatment hydroquinone is very good at prevention of hyperpigmentation. 

It certainly looks like Post Inflammatory Pigmentation (PIP).  This is very common in Asian skin.  Most cases will settle spontaneously but it will take time - up to 12 months.It is very important to protect your arms from sun exposure both out of doors and even sitting in a car using broad spectrum SPF 50 sunscreen or preferably long sleeves.You may want to see a Dermatologist regarding the possibility of using a pigment fading cream.