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   _____   _    _               ______    _____   
  / ___// | || | ||   ____     /_   _//  / ____|| 
  \___ \\ | || | ||  |    \\    -| ||-  / //---`' 
  /    // | \\_/ ||  | [] ||    _| ||_  \ \\___   
 /____//   \____//   |  __//   /_____//  \_____|| 
`-----`     `---`    |_|`-`    `-----`    `----`  
                     `-`

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Text this: Collimating of diverging laser diode beam using graded-index optical fiber