Optical spectrometer

A method for spectroscopy, the method comprising:

• exposing a photodiode to light;
• imposing adjustable strain on the photodiode by a straining mechanism;
• and
• measuring variation of photocurrent with strain at different values of said adjustable strain imposed by the straining mechanism.

An optical spectrometer comprising:

• a photodiode;
• a straining mechanism connected to the photodiode, the straining mechanism being configured to impose an adjustable strain on the photodiode;
• and
• a measurement apparatus electrically coupled to the photodiode, the measurement apparatus being configured to measure a photocurrent created by the photodiode.

A method for measuring a band of light emitted from a light source, the method comprising:

• exposing a photodiode to light emitted from a light source, the photodiode having a strain, the strain having a first strain value, the first strain value corresponding to a first wavelength;
• determining, using a measurement apparatus, a first photocurrent generated by the photodiode;
• adjusting, by a straining mechanism, the strain of the photodiode so that the strain of the photodiode has a second strain value, the second strain value corresponding to a second wavelength;
• determining, using the measurement apparatus and responsive to the adjusting, a second photocurrent generated by the photodiode;
• and
• determining an intensity of a band of light, wherein the band of light corresponds to light with wavelengths between the first wavelength and the second wavelength, by comparing the first photocurrent to the second photocurrent.