Patent ID: 8705975
Filing Date: 2014-04-22
Classification: G02B

Abstract:
1. An optical transceiver, comprising: an optical fiber port having an axis; a body made of a material transparent to a transmitted optical signal and a received optical signal; an opto-electronic light source configured to emit the transmitted optical signal; a first lens formed on a surface of the body and oriented to receive the transmitted optical signal emitted by the opto-electronic light source; a diffractive optical element rigidly retained in the body and interposed along the axis between the optical fiber port and the opto-electronic light source, the transmitted optical signal passing through the first lens and the body and impinging upon the diffractive optical element, the diffractive optical element configured to pass a first portion of the transmitted optical signal through the diffractive optical element to the optical fiber port along the axis, the diffractive optical element being further configured to diffractively split the transmitted optical signal into the first portion and a second portion and diffractively redirect the second portion of the transmitted optical signal in a direction oriented at a second non-zero angle with respect to the axis; a second lens formed on a surface of the body and oriented to receive the received optical signal diffractively redirected from the diffractive optical element at a first non-zero angle with respect to the axis, the received optical signal being transmitted through the body and the second lens; a first opto-electronic light detector oriented to receive the received optical signal transmitted through the second lens; a third lens formed on the surface of the body and oriented to receive the second portion of the transmitted optical signal diffractively redirected from the diffractive optical element, the second portion of the transmitted optical signal being transmitted through the body and the third lens; and a second opto-electronic light detector oriented to receive the second portion of the transmitted optical signal through the third lens.