Abstract
This work retrieves polarized optical soliton solutions for pulses in birefringent fibers that are modeled by the Lakshmanan–Porsezian–Daniel model. The unified approach recovers singular solitons only. This approach fails to retrieve the much needed bright and dark soliton solutions. These singular solitons exist with restricted parametric conditions that are also exhibited.
•Soliton solutions to Lakshmanan–Porsezian–Daniel model with differential group delay are revealed.•Singular soliton solutions are recovered by the unified approach.•These singular solitons exist with restricted parametric conditions that are also exhibited.