angular 2/4 routing with named outlet?

问题:

I am trying to do implement named outlet in my app.

Here is my route config:

    {
    path: 'contact',
    children: [
      { path: '', component: ContactComponent, pathMatch: 'full' },
      { path: 'list', component: ContactlistComponent },
      { path: 'hold', component: ContactOperationComponent, outlet: 'popup' }      
    ]
  }

Here is Outlet which i have kept in AppComponent with main router-outlet

<router-outlet name="popup"></router-outlet>

And here is my routerLink which is calling my Component:

<a [routerLink]="['/contact',{outlets:{popup:['hold']}}]">Hold</a>

But, the URL is generated by this approach is a mess. Here it looks like this:

/contact/(list//popup:hold)

It should be like this

/contact/list(popup:hold)

and due to that i can't even access passed parameters to called Component.

What can be the issue here?