An accelerometer system comprising: a proof mass; a set of double-ended tuning fork, DETF, structures (54, 58); a frame, wherein the proof mass is suspended in a first direction relative to the frame by the set of DETF structures (54, 58) comprising a first DETF structure and a second DETF structure, the proof mass suspended in a proof mass resting plane, wherein the first DETF structure includes a proximal end that is proximate to the proof mass and a distal end that is separated from the frame by a first gap, and the second DETF structure includes a proximal end that is proximate to the proof mass, and a distal end that is separated from the frame by a second gap; a first distal tine to suspend first DETF structure within the frame such that the first DETF structure is perpendicular to the proof mass resting plane; a second distal tine to suspend first DETF structure within the frame such that the second DETF structure is perpendicular to the proof mass resting plane; a light-emitting device configured to emit an optical signal; and a circuit configured to: modulate, using a modulating device, the optical signal to produce a modulated optical signal, wherein the set of DETF structures are configured to carry the modulated optical signal; receive, using a photoreceiver, the modulated optical signal; convert, using the photoreceiver, the modulated optical signal into an electrical signal; process the electrical signal to obtain a processed electrical signal; transmit the processed electrical signal to the modulating device, wherein the modulating device is configured to modulate the optical signal based on the processed electrical signal; and determine, based on the processed electrical signal, a frequency value. a proof mass; a set of double-ended tuning fork, DETF, structures (54, 58); a frame, wherein the proof mass is suspended in a first direction relative to the frame by the set of DETF structures (54, 58) comprising a first DETF structure and a second DETF structure, the proof mass suspended in a proof mass resting plane, wherein the first DETF structure includes a proximal end that is proximate to the proof mass and a distal end that is separated from the frame by a first gap, and the second DETF structure includes a proximal end that is proximate to the proof mass, and a distal end that is separated from the frame by a second gap; a first distal tine to suspend first DETF structure within the frame such that the first DETF structure is perpendicular to the proof mass resting plane; a second distal tine to suspend first DETF structure within the frame such that the second DETF structure is perpendicular to the proof mass resting plane; a light-emitting device configured to emit an optical signal; and a circuit configured to: modulate, using a modulating device, the optical signal to produce a modulated optical signal, wherein the set of DETF structures are configured to carry the modulated optical signal; receive, using a photoreceiver, the modulated optical signal; convert, using the photoreceiver, the modulated optical signal into an electrical signal; process the electrical signal to obtain a processed electrical signal; transmit the processed electrical signal to the modulating device, wherein the modulating device is configured to modulate the optical signal based on the processed electrical signal; and determine, based on the processed electrical signal, a frequency value. modulate, using a modulating device, the optical signal to produce a modulated optical signal, wherein the set of DETF structures are configured to carry the modulated optical signal; receive, using a photoreceiver, the modulated optical signal; convert, using the photoreceiver, the modulated optical signal into an electrical signal; process the electrical signal to obtain a processed electrical signal; transmit the processed electrical signal to the modulating device, wherein the modulating device is configured to modulate the optical signal based on the processed electrical signal; and determine, based on the processed electrical signal, a frequency value.