With the construction of FTTH and triple play

bow-type cables have been widely used in cities and villages in China.Affected by the urban where the space is limited and rural where the houses are widely distributed

the traditional bow-type cable has many problems in construction

such as repetitive operations

cable damage

and difficulty in operation.Therefore

how to solve the construction problem and develop a new cable which has high reliability and applicability has become the primary problem solved by optical cable manufacturers.In this paper

a symmetric parallel butterfly-introducing cable was introduced

which avoids repetitive construction and overcomes the difficulties in construction.